CVE-2023-39615

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2023-08-29. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

August 29, 2023

Last Modified

November 3, 2025

References (3)

Vendor Advisories for CVE-2023-39615(8)

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

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4-wincw/windows-machine-config-rhel9-operator:8.1.2-132024-03-25redhat
redhatodf4/rook-ceph-rhel9-operator:v4.15.0-1032024-03-19redhat
redhatlibxml22024-03-18redhat
redhatlibxml2-0:2.9.7-13.el8_6.42024-01-25redhat
redhatlibxml2-0:2.9.7-18.el8_92024-01-10redhat
redhatlibxml2-0:2.9.13-5.el9_32023-12-12redhat
redhatlibxml2-0:2.9.7-16.el8_8.22023-11-28redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libxml22.9.10+dfsg-6.7 ... 2.9.10+dfsg-6.7+deb11u5 (6 versions)2.9.10+dfsg-6.7+deb11u6—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libxml22.9.14+dfsg-1.2, 2.9.14+dfsg-1.3~deb12u12.9.14+dfsg-1.3~deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.12.7+dfsg+really2.9.14-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libxml2—2.12.7+dfsg+really2.9.14-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 167 total refreshes for this CVE.

  1. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
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  7. 2026-09-03 19:29 UTCOSV refresh
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  24. 2026-08-17 09:06 UTCOSV refresh
  25. 2026-08-16 14:54 UTCEPSS rescore
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  1. 2026-08-16 02:12 UTCEPSS rescore
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  9. 2026-08-08 16:35 UTCEPSS rescore
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  11. 2026-08-06 13:45 UTCEPSS rescore
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  16. 2026-08-02 03:11 UTCOSV refresh
  17. 2026-08-02 02:25 UTCEPSS rescore
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  21. 2026-07-30 16:26 UTCEPSS rescore
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  23. 2026-07-30 01:28 UTCEPSS rescore
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  25. 2026-07-28 15:34 UTCEPSS rescore
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  27. 2026-07-26 14:52 UTCEPSS rescore
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  33. 2026-07-23 02:25 UTCEG score recompute
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  45. 2026-07-15 16:56 UTCEPSS rescore
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  47. 2026-07-15 10:49 UTCOSV refresh
  48. 2026-07-15 01:58 UTCEPSS rescore
  49. 2026-07-13 22:28 UTCEPSS rescore
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  51. 2026-07-13 06:11 UTCEPSS rescore
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  65. 2026-07-01 15:05 UTCEPSS rescore
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  73. 2026-06-27 11:34 UTCOSV refresh
  74. 2026-06-27 03:07 UTCEPSS rescore
  75. 2026-06-27 03:07 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-39615?
CVE-2023-39615 is a medium vulnerability published on August 29, 2023. Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not…
When was CVE-2023-39615 disclosed?
CVE-2023-39615 was first published in the National Vulnerability Database on August 29, 2023, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-39615 actively exploited?
CVE-2023-39615 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 47.2% of all scored CVEs.
What is the CVSS score of CVE-2023-39615?
CVE-2023-39615 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2023-39615?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39615, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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