CVE-2026-21437

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
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.

eopkg is a Solus package manager implemented in python3. In versions prior to 4.4.0, a malicious package could include files that are not tracked by eopkg. This requires the installation of a package from a malicious or compromised source. Files in such packages would not be shown by lseopkg and related tools. The issue has been fixed in v4.4.0. Users only installing packages from the Solus repositories are not affected.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

January 1, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 8, 2026
Patch available. Sources: github_release, github, github_commit, github_pr.
github Patch Available

Package file list integrity bypass · Advisory · getsolus/eopkg · GitHub

https://github.com/getsolus/eopkg/security/advisories/GHSA-hjp7-qwrj-6cc6
github_release Patch Available

v4.4.0

Patch available: getsolus/eopkg v4.4.0

https://github.com/getsolus/eopkg/releases/tag/v4.4.0
github_pr Patch Available

Fix two path validation bugs

Patch available: getsolus/eopkg v4.4.0 (PR #201 merged 2025-12-03)

https://github.com/getsolus/eopkg/pull/201
github_commit Patch Available

commit e7694323ed64 (getsolus/eopkg)

Patch available: getsolus/eopkg v4.4.0 (contains commit e7694323ed64)

https://github.com/getsolus/eopkg/commit/e7694323ed64e08b5b4b108fff273c64125cd39d

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 22× 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 133 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-16 14:07 UTCEPSS rescore
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-13 16:47 UTCEPSS rescore
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  13. 2026-09-01 13:53 UTCEPSS rescore
  14. 2026-08-31 22:34 UTCOSV refresh
  15. 2026-08-30 19:17 UTCEPSS rescore
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  17. 2026-08-28 21:41 UTCEPSS rescore
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  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 02:14 UTCEPSS rescore
  3. 2026-08-15 01:30 UTCEPSS rescore
  4. 2026-08-15 00:08 UTCEG score recompute
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-12 13:50 UTCEPSS rescore
  7. 2026-08-11 13:42 UTCEPSS rescore
  8. 2026-08-11 00:00 UTCEPSS rescore
  9. 2026-08-09 22:06 UTCEG score recompute
  10. 2026-08-09 13:46 UTCEPSS rescore
  11. 2026-08-08 16:37 UTCEPSS rescore
  12. 2026-08-08 03:27 UTCEG score recompute
  13. 2026-08-06 13:46 UTCEPSS rescore
  14. 2026-08-06 06:29 UTCEG score recompute
  15. 2026-08-05 19:17 UTCEPSS rescore
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  19. 2026-08-02 02:26 UTCEPSS rescore
  20. 2026-08-01 04:15 UTCEPSS rescore
  21. 2026-07-30 01:30 UTCEPSS rescore
  22. 2026-07-27 14:13 UTCEPSS rescore
  23. 2026-07-26 14:54 UTCEPSS rescore
  24. 2026-07-26 14:54 UTCEPSS rescore
  25. 2026-07-24 14:17 UTCEPSS rescore
  26. 2026-07-23 14:18 UTCEPSS rescore
  27. 2026-07-23 14:18 UTCEPSS rescore
  28. 2026-07-23 11:19 UTCOSV refresh
  29. 2026-07-23 03:06 UTCEG score recompute
  30. 2026-07-22 14:08 UTCEPSS rescore
  31. 2026-07-21 15:24 UTCEPSS rescore
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  33. 2026-07-20 17:08 UTCEPSS rescore
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  38. 2026-07-18 10:04 UTCEPSS rescore
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  40. 2026-07-16 17:03 UTCEPSS rescore
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  42. 2026-07-15 16:57 UTCEPSS rescore
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  44. 2026-07-15 02:00 UTCEPSS rescore
  45. 2026-07-15 02:00 UTCEPSS rescore
  46. 2026-07-13 22:30 UTCEPSS rescore
  47. 2026-07-13 06:13 UTCEPSS rescore
  48. 2026-07-13 06:13 UTCEPSS rescore
  49. 2026-07-12 05:46 UTCEPSS rescore
  50. 2026-07-12 05:46 UTCEPSS rescore
  51. 2026-07-11 08:27 UTCEPSS rescore
  52. 2026-07-09 19:10 UTCEPSS rescore
  53. 2026-07-08 15:15 UTCEPSS rescore
  54. 2026-07-08 15:15 UTCEPSS rescore
  55. 2026-07-07 13:46 UTCEPSS rescore
  56. 2026-07-06 16:27 UTCEPSS rescore
  57. 2026-07-06 16:27 UTCEPSS rescore
  58. 2026-07-06 06:32 UTCOSV refresh
  59. 2026-07-06 02:23 UTCEPSS rescore
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  61. 2026-07-05 02:30 UTCEPSS rescore
  62. 2026-07-04 06:31 UTCEPSS rescore
  63. 2026-07-04 06:31 UTCEPSS rescore
  64. 2026-07-01 15:06 UTCEPSS rescore
  65. 2026-07-01 15:06 UTCEPSS rescore
  66. 2026-06-30 23:22 UTCEPSS rescore
  67. 2026-06-29 14:06 UTCEPSS rescore
  68. 2026-06-28 14:07 UTCEPSS rescore
  69. 2026-06-28 04:56 UTCEPSS rescore
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  71. 2026-06-27 03:08 UTCEPSS rescore
  72. 2026-06-25 13:49 UTCEPSS rescore
  73. 2026-06-24 14:05 UTCEPSS rescore
  74. 2026-06-23 21:32 UTCEPSS rescore
  75. 2026-06-22 14:25 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-21437?
CVE-2026-21437 is a medium vulnerability published on January 1, 2026. eopkg is a Solus package manager implemented in python3. In versions prior to 4.4.0, a malicious package could include files that are not tracked by eopkg. This requires the installation of a package from a malicious or compromised source. Files in such packages would not be shown by lseopkg and…
When was CVE-2026-21437 disclosed?
CVE-2026-21437 was first published in the National Vulnerability Database on January 1, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21437 actively exploited?
CVE-2026-21437 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 93.2% of all scored CVEs.
What is the CVSS score of CVE-2026-21437?
CVE-2026-21437 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-21437?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21437, 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.

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