CVE-2026-9150

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory published 2026-05-21. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and a denial of service (DoS) in the affected system.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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
0.6%
EPSS %ILE
46th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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

May 20, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated May 29, 2026
Patch available. Sources: redhat, github_pr.
GitHub pull request

Fix a buffer overflow when copying SHA-384/512 checksum from a Debian repository

Fix merged in openSUSE/libsolv PR #616 on 2026-04-22 — awaiting tagged release

https://github.com/openSUSE/libsolv/pull/616
Red Hat

2460379 – (CVE-2026-9150) CVE-2026-9150 libsolv: Stack-based buffer overflow in libsolv's Debian metadata parser when handling SHA384/SHA512 checksums

https://bugzilla.redhat.com/show_bug.cgi?id=2460379
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-9150

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatlibsolv-0:0.7.29-8.el10_0.12026-07-31redhat
redhatlibsolv-main-0.7.39-3.hum12026-06-28redhat
redhatlibsolv-0:0.7.33-5.el10_22026-06-23redhat
redhatlibsolv-main-0.7.38-2.hum12026-05-27redhat

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 rangeFix by version rangeDependents
libsolv0.7.17-1 ... 0.7.39-1 (25 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libsolv0.7.23-1 ... 0.7.40-1 (22 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libsolv0.7.32-1 ... 0.7.40-1 (8 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libsolv0.7.32-1, 0.7.35-1, 0.7.36-1
  • every version up to 0.7.37-1: fixed in 0.7.37-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 35× 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 98 of 270 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 172 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-18 03:00 UTCEG score recompute
  4. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-12 14:45 UTCEG score recompute
  11. 2026-10-11 19:13 UTCEG score recompute
  12. 2026-10-11 16:30 UTCEG score recompute
  13. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-10-11 13:44 UTCEG score recompute
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  16. 2026-10-10 00:55 UTCOSV refresh
  17. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  18. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 73 more
  1. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  6. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  7. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-09-20 09:03 UTCOSV refresh
  11. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  26. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  27. 2026-09-01 12:27 UTCEG score recompute
  28. 2026-09-01 12:27 UTCVendor advisory
  29. 2026-09-01 12:27 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  30. 2026-09-01 11:50 UTCEG score recompute
  31. 2026-09-01 11:50 UTCVendor advisory
  32. 2026-09-01 11:50 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  33. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  34. 2026-08-31 16:42 UTCEG score recompute
  35. 2026-08-31 16:42 UTCVendor advisory
  36. 2026-08-31 16:41 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  37. 2026-08-31 14:43 UTCEG score recompute
  38. 2026-08-31 14:43 UTCVendor advisory
  39. 2026-08-31 14:43 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  40. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  42. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  43. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  44. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  45. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  46. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  47. 2026-08-23 16:52 UTCEG score recompute
  48. 2026-08-23 16:52 UTCVendor advisory
  49. 2026-08-23 16:52 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  50. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  51. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  52. 2026-08-21 22:52 UTCEG score recompute
  53. 2026-08-21 22:52 UTCVendor advisory
  54. 2026-08-21 22:52 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  55. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  56. 2026-08-20 18:53 UTCEG score recompute
  57. 2026-08-20 18:53 UTCVendor advisory
  58. 2026-08-20 18:53 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  59. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  60. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  61. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  62. 2026-08-17 09:50 UTCEG score recompute
  63. 2026-08-17 09:50 UTCVendor advisory
  64. 2026-08-17 09:50 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  65. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  66. 2026-08-16 03:28 UTCEG score recompute
  67. 2026-08-16 03:28 UTCVendor advisory
  68. 2026-08-16 03:28 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5
  69. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  70. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  71. 2026-08-14 12:55 UTCEG score recompute
  72. 2026-08-14 12:55 UTCVendor advisory
  73. 2026-08-14 12:55 UTCGHSA enrichmentGHSA-p4w9-3pj8-mhq7 · GitHub CVSS 6.5

Frequently asked(5)

What is CVE-2026-9150?
CVE-2026-9150 is a medium-severity vulnerability; its CVE record was published on May 20, 2026. A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and…
When was CVE-2026-9150 made public?
CVE-2026-9150 was made public on May 20, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on May 20, 2026. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-9150 actively exploited?
CVE-2026-9150 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9150?
CVE-2026-9150 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-9150?
A fix for CVE-2026-9150 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-9150 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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