CVE-2024-56171

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-02-19. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
36
EG Risk 36/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
Exploitation1.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.2%
EPSS %ILE
67th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 18, 2025

Last Modified

November 3, 2025

Advisory Details (10)

Auto-updated Oct 11, 2026
Patch available.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4064-1] libxml2 security update

https://lists.debian.org/debian-lts-announce/2025/02/msg00028.html
Web page

Full Disclosure: APPLE-SA-03-31-2025-8 macOS Sonoma 14.7.5

http://seclists.org/fulldisclosure/2025/Apr/9
Web page

Full Disclosure: APPLE-SA-03-31-2025-7 macOS Sequoia 15.4

http://seclists.org/fulldisclosure/2025/Apr/8
Web page

Full Disclosure: APPLE-SA-03-31-2025-4 iPadOS 17.7.6

http://seclists.org/fulldisclosure/2025/Apr/5
Web page

Full Disclosure: APPLE-SA-03-31-2025-3 iOS 18.4 and iPadOS 18.4

http://seclists.org/fulldisclosure/2025/Apr/4
Web page

Full Disclosure: APPLE-SA-04-01-2025-1 watchOS 11.4

http://seclists.org/fulldisclosure/2025/Apr/13
Web page

Full Disclosure: APPLE-SA-03-31-2025-11 visionOS 2.4

http://seclists.org/fulldisclosure/2025/Apr/12
Web page

Full Disclosure: APPLE-SA-03-31-2025-10 tvOS 18.4

http://seclists.org/fulldisclosure/2025/Apr/11
Web page

Full Disclosure: APPLE-SA-03-31-2025-9 macOS Ventura 13.7.5

http://seclists.org/fulldisclosure/2025/Apr/10
Web page

[CVE-2024-56171] Use-after-free in xmlSchemaIDCFillNodeTables (#828) · Issues · GNOME / libxml2 · GitLab

https://gitlab.gnome.org/GNOME/libxml2/-/issues/828

Vendor Advisories for CVE-2024-56171(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(25)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython-libxml2 (2.9.1+dfsg1-3ubuntu4.13+esm7) @ trusty2026-05-30ubuntu
redhatservice-interconnect/skupper-site-controller-rhel9:1.4.8-12025-06-30redhat
redhatlibxml2-0:2.12.5-5.el10_02025-05-13redhat
redhatservice-interconnect/skupper-site-controller-rhel9:1.8.5-12025-04-17redhat
redhatnetwork-observability/network-observability-rhel9-operator:1.8-17441125012025-04-14redhat
redhatrhcos-412.86.202503310142-02025-04-10redhat
redhatrhcos-414.92.202504010153-02025-04-09redhat
redhatrhcos-416.94.202503252048-02025-04-03redhat
redhatlibxml22025-04-02redhat
redhatrhoai/odh-notebook-controller-rhel8:v2.16.2-17424872252025-03-31redhat
redhatrhcos-415.92.202503190057-02025-03-26redhat
redhatrhcos-417.94.202503172033-02025-03-26redhat
redhatrhcos-418.94.202503181639-02025-03-25redhat
redhatrhcos-413.92.202503112237-02025-03-20redhat
redhatrhosdt/opentelemetry-target-allocator-rhel8:rhosdt-3.52025-03-13redhat
redhatlibxml2-0:2.9.1-6.el7_9.92025-03-12redhat
redhatlibxml2-0:2.9.7-19.el8_102025-03-12redhat
redhatlibxml2-0:2.9.13-6.el9_5.22025-03-12redhat
redhatlibxml2-0:2.9.13-9.el9_42025-03-12redhat
redhatlibxml2-0:2.9.7-9.el8_4.52025-03-11redhat
redhatlibxml2-0:2.9.7-9.el8_2.12025-03-11redhat
redhatlibxml2-0:2.9.13-1.el9_0.42025-03-10redhat
redhatlibxml2-0:2.9.7-16.el8_8.72025-03-10redhat
redhatlibxml2-0:2.9.7-13.el8_6.82025-03-10redhat
redhatlibxml2-0:2.9.13-3.el9_2.62025-03-10redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(11 across 11 ecosystems)
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.11.8-r1: fixed in 2.11.8-r1
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.11.8-r1: fixed in 2.11.8-r1
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.12.7-r1: fixed in 2.12.7-r1
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.13.4-r4: fixed in 2.13.4-r4
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.13.6-r0: fixed in 2.13.6-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.13.6-r0: fixed in 2.13.6-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • 2.13.0 up to 2.13.6-r0: fixed in 2.13.6-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.9.10+dfsg-6.7 ... 2.9.10+dfsg-6.7+deb11u5 (6 versions)
  • every version up to 2.9.10+dfsg-6.7+deb11u6: fixed in 2.9.10+dfsg-6.7+deb11u6
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.9.14+dfsg-1.2, 2.9.14+dfsg-1.3~deb12u1
  • every version up to 2.9.14+dfsg-1.3~deb12u2: fixed in 2.9.14+dfsg-1.3~deb12u2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.12.7+dfsg+really2.9.14-0.4: fixed in 2.12.7+dfsg+really2.9.14-0.4
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libxml2—
  • every version up to 2.12.7+dfsg+really2.9.14-0.4: fixed in 2.12.7+dfsg+really2.9.14-0.4
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(8)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 30× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 89 of 169 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 11 repeat rows among the latest 100 are merged into the row they repeat. The 80 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-15 16:30 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  2. 2026-10-14 16:30 UTCEPSS rescoreEPSS 1.2% · 67th percentile
  3. 2026-10-13 16:31 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  4. 2026-10-12 17:37 UTCEG score recompute
  5. 2026-10-12 16:31 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  6. 2026-10-11 21:03 UTCEG score recompute
  7. 2026-10-11 15:55 UTCEG score recompute
  8. 2026-10-11 13:46 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  9. 2026-10-10 19:58 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  10. 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  11. 2026-10-08 17:08 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  12. 2026-10-07 23:46 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  13. 2026-10-06 15:16 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  14. 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  15. 2026-10-04 23:20 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  16. 2026-10-03 14:24 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  17. 2026-10-02 23:10 UTCOSV refresh
  18. 2026-10-02 16:24 UTCEG score recompute
  19. 2026-10-01 19:48 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  20. 2026-09-30 15:02 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  21. 2026-09-28 13:50 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  22. 2026-09-27 13:44 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  23. 2026-09-26 15:57 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  24. 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  25. 2026-09-23 13:46 UTCEPSS rescoreEPSS 1.2% · 66th percentile
Show 64 more
  1. 2026-09-22 14:47 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  2. 2026-09-20 20:14 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  3. 2026-09-18 19:26 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  4. 2026-09-16 14:06 UTCEPSS rescoreEPSS 1.2% · 66th percentile
  5. 2026-09-16 05:12 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  6. 2026-09-15 03:08 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  7. 2026-09-13 20:39 UTCOSV refresh
  8. 2026-09-13 16:45 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  9. 2026-09-12 14:59 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  10. 2026-09-11 14:51 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  11. 2026-09-11 09:35 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  12. 2026-09-10 09:33 UTCEPSS rescoreEPSS 1.2% · 65th percentile
  13. 2026-09-08 21:59 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  14. 2026-09-07 16:00 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  15. 2026-09-06 13:46 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  16. 2026-09-04 13:59 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  17. 2026-09-04 05:05 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  18. 2026-09-02 14:10 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  19. 2026-09-01 13:52 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  20. 2026-08-30 19:16 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  21. 2026-08-30 01:21 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  22. 2026-08-28 21:39 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  23. 2026-08-27 14:24 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  24. 2026-08-26 14:44 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  25. 2026-08-25 22:09 UTCOSV refresh
  26. 2026-08-25 13:47 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  27. 2026-08-24 14:15 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  28. 2026-08-23 00:18 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  29. 2026-08-21 23:47 UTCEPSS rescoreEPSS 1.2% · 64th percentile
  30. 2026-08-20 22:54 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  31. 2026-08-19 17:02 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  32. 2026-08-18 13:47 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  33. 2026-08-17 13:45 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  34. 2026-08-16 14:55 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  35. 2026-08-16 02:13 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  36. 2026-08-15 01:29 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  37. 2026-08-13 21:59 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  38. 2026-08-12 13:49 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  39. 2026-08-11 13:41 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  40. 2026-08-10 23:58 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  41. 2026-08-09 14:39 UTCOSV refresh
  42. 2026-08-09 13:45 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  43. 2026-08-08 16:35 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  44. 2026-08-07 16:26 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  45. 2026-08-06 13:45 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  46. 2026-08-05 19:16 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  47. 2026-08-04 15:08 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  48. 2026-08-03 10:35 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  49. 2026-08-02 02:25 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  50. 2026-08-01 04:14 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  51. 2026-07-30 16:26 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  52. 2026-07-30 01:29 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  53. 2026-07-28 15:35 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  54. 2026-07-25 14:17 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  55. 2026-07-24 15:11 UTCOSV refresh
  56. 2026-07-24 14:16 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  57. 2026-07-23 14:17 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  58. 2026-07-23 02:44 UTCEG score recompute
  59. 2026-07-22 14:07 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  60. 2026-07-21 15:23 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  61. 2026-07-20 17:07 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  62. 2026-07-19 14:30 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  63. 2026-07-19 02:28 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  64. 2026-07-18 10:03 UTCEPSS rescoreEPSS 1.1% · 62nd percentile

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-56171?
CVE-2024-56171 is a high-severity vulnerability; its CVE record was published on February 18, 2025. libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be…
When was the CVE record for CVE-2024-56171 published?
The CVE record for CVE-2024-56171 was published on February 18, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 3, 2025; the record at its source may have been updated since.
Is CVE-2024-56171 actively exploited?
CVE-2024-56171 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (67th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-56171?
CVE-2024-56171 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-56171?
A fix for CVE-2024-56171 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-56171 are linked in the Vendor Advisories panel on this page.

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