CVE-2026-82327

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-08-28. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in libsolv, a dependency-resolution library used by RPM-based package managers such as dnf and zypper to work with .solv repository cache files. When libsolv rewrites a .solv cache file, it reads directory-id values from the file's compressed filelist data without validating that they fall within the expected range. A corrupted or specially crafted .solv cache file (for example, one left in a torn state after an unclean system shutdown) can cause an out-of-bounds memory write when a tool such as dnf, yum, or zypper next processes it. Successful exploitation is expected to result in a crash of the affected tool (denial of service); it is not expected to allow arbitrary code execution because the out-of-bounds write always stores a fixed, non-attacker-controlled value.

CVSS v3
5.5
EG Score
5.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 28, 2026
Patch available. Sources: redhat.
redhat

2525602 – (CVE-2026-82327) CVE-2026-82327 libsolv: libsolv: out-of-bounds write in repo_write() via unvalidated directory id from vertical/paged .solv filelist data

https://bugzilla.redhat.com/show_bug.cgi?id=2525602
redhat Patch Available

CVE-2026-82327 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-82327

Vendor Advisories for CVE-2026-82327(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.23-1 ... 0.7.39-1 (20 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.32-1 ... 0.7.39-1 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libsolv0.7.32-1 ... 0.7.39-1 (6 versions)——

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 24× in last 7d / 74× 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.

  1. 2026-09-19 11:16 UTCEG score recompute
  2. 2026-09-19 11:16 UTCVendor advisory
  3. 2026-09-19 11:16 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 12:48 UTCEG score recompute
  6. 2026-09-18 12:48 UTCVendor advisory
  7. 2026-09-18 12:48 UTCGHSA enrichment
  8. 2026-09-17 14:18 UTCVendor advisory
  9. 2026-09-17 14:18 UTCGHSA enrichment
  10. 2026-09-16 15:45 UTCEG score recompute
  11. 2026-09-16 15:45 UTCVendor advisory
  12. 2026-09-16 15:45 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 17:16 UTCEG score recompute
  16. 2026-09-15 17:16 UTCVendor advisory
  17. 2026-09-15 17:16 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 18:47 UTCVendor advisory
  21. 2026-09-14 18:47 UTCGHSA enrichment
  22. 2026-09-13 20:18 UTCEG score recompute
  23. 2026-09-13 20:18 UTCVendor advisory
  24. 2026-09-13 20:18 UTCGHSA enrichment
  25. 2026-09-12 21:49 UTCEG score recompute
Show 49 more
  1. 2026-09-12 21:49 UTCVendor advisory
  2. 2026-09-12 21:49 UTCGHSA enrichment
  3. 2026-09-11 23:20 UTCEG score recompute
  4. 2026-09-11 23:20 UTCVendor advisory
  5. 2026-09-11 23:20 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 00:21 UTCEG score recompute
  9. 2026-09-11 00:21 UTCGHSA enrichment
  10. 2026-09-10 01:52 UTCGHSA enrichment
  11. 2026-09-09 03:20 UTCEG score recompute
  12. 2026-09-09 03:20 UTCVendor advisory
  13. 2026-09-09 03:20 UTCGHSA enrichment
  14. 2026-09-08 22:01 UTCEPSS rescore
  15. 2026-09-08 04:51 UTCEG score recompute
  16. 2026-09-08 04:51 UTCVendor advisory
  17. 2026-09-08 04:51 UTCGHSA enrichment
  18. 2026-09-07 06:22 UTCEG score recompute
  19. 2026-09-07 06:22 UTCGHSA enrichment
  20. 2026-09-06 13:48 UTCEPSS rescore
  21. 2026-09-06 07:49 UTCEG score recompute
  22. 2026-09-06 07:49 UTCGHSA enrichment
  23. 2026-09-05 15:31 UTCEPSS rescore
  24. 2026-09-05 09:20 UTCEG score recompute
  25. 2026-09-05 09:20 UTCGHSA enrichment
  26. 2026-09-04 10:50 UTCEG score recompute
  27. 2026-09-04 10:50 UTCGHSA enrichment
  28. 2026-09-04 05:07 UTCEPSS rescore
  29. 2026-09-03 12:20 UTCGHSA enrichment
  30. 2026-09-02 13:50 UTCGHSA enrichment
  31. 2026-09-01 15:16 UTCEG score recompute
  32. 2026-09-01 15:16 UTCGHSA enrichment
  33. 2026-09-01 13:54 UTCEPSS rescore
  34. 2026-09-01 04:40 UTCEPSS rescore
  35. 2026-09-01 04:40 UTCEPSS rescore
  36. 2026-08-31 16:47 UTCEG score recompute
  37. 2026-08-31 16:46 UTCGHSA enrichment
  38. 2026-08-30 19:18 UTCEPSS rescore
  39. 2026-08-30 19:17 UTCEPSS rescore
  40. 2026-08-30 17:29 UTCEG score recompute
  41. 2026-08-30 17:29 UTCGHSA enrichment
  42. 2026-08-30 01:22 UTCEPSS rescore
  43. 2026-08-29 19:00 UTCGHSA enrichment
  44. 2026-08-28 20:28 UTCGHSA enrichment
  45. 2026-08-28 19:03 UTCEG score recompute
  46. 2026-08-28 19:03 UTCGHSA enrichment
  47. 2026-08-28 16:33 UTCEG score recompute
  48. 2026-08-28 15:29 UTCEG score recompute
  49. 2026-08-28 15:25 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-82327?
CVE-2026-82327 is a medium vulnerability published on August 28, 2026. A flaw was found in libsolv, a dependency-resolution library used by RPM-based package managers such as dnf and zypper to work with .solv repository cache files. When libsolv rewrites a .solv cache file, it reads directory-id values from the file's compressed filelist data without validating that…
When was CVE-2026-82327 disclosed?
CVE-2026-82327 was first published in the National Vulnerability Database on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82327 actively exploited?
CVE-2026-82327 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.3% of all scored CVEs.
What is the CVSS score of CVE-2026-82327?
CVE-2026-82327 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-82327?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82327, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-82327

Explore →

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