CVE-2026-79655

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-25. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: Elevated riskExposed: 0

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

A flaw was found in sos clean, a utility within the sos package. This vulnerability allows a local attacker to perform arbitrary file creation or overwrite. By crafting a malicious tar archive, an attacker can exploit a path traversal issue during tar extraction, where symlink and hardlink targets are not properly validated. This enables the attacker to write files to arbitrary locations on the system with the privileges of the sos clean process, which often runs as root.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
51(Track*)
EG Risk 51/100SSVC: 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
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 28, 2026

Advisory Details (4)

Auto-updated Aug 25, 2026
Patch available. Sources: github_pr, redhat.
generic

[cleaner] extract follows out-of-tree tar symlinks · Issue #4460 · sosreport/sos · GitHub

https://github.com/sosreport/sos/issues/4460
github_pr

[cleaner] refuse out-of-tree tar members on extract

Upstream fix in progress (PR #4461 · sosreport/sos, state=open)

https://github.com/sosreport/sos/pull/4461
redhat

2523363 – (CVE-2026-79655) CVE-2026-79655 sos: sos: path traversal in sos clean tar extraction via unvalidated symlink/hardlink targets leads to arbitrary file write

https://bugzilla.redhat.com/show_bug.cgi?id=2523363
redhat Patch Available

CVE-2026-79655 - 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-2026-79655

Vendor Advisories for CVE-2026-79655(1)

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

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
sos4.10.0-1 ... 4.9.2-3 (20 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
sos4.10.0-1 ... 4.9.2-3 (20 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 41× in last 7d / 123× 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 123 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 11:58 UTCVendor advisory
  3. 2026-09-20 11:58 UTCGHSA enrichment
  4. 2026-09-19 23:34 UTCEG score recompute
  5. 2026-09-19 23:34 UTCVendor advisory
  6. 2026-09-19 23:34 UTCGHSA enrichment
  7. 2026-09-19 11:45 UTCVendor advisory
  8. 2026-09-19 11:45 UTCGHSA enrichment
  9. 2026-09-18 23:48 UTCEG score recompute
  10. 2026-09-18 23:48 UTCVendor advisory
  11. 2026-09-18 23:48 UTCGHSA enrichment
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-18 11:55 UTCVendor advisory
  14. 2026-09-18 11:55 UTCGHSA enrichment
  15. 2026-09-18 00:05 UTCEG score recompute
  16. 2026-09-18 00:05 UTCVendor advisory
  17. 2026-09-18 00:05 UTCGHSA enrichment
  18. 2026-09-17 11:08 UTCVendor advisory
  19. 2026-09-17 11:08 UTCGHSA enrichment
  20. 2026-09-16 23:18 UTCEG score recompute
  21. 2026-09-16 23:18 UTCVendor advisory
  22. 2026-09-16 23:18 UTCGHSA enrichment
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 11:28 UTCEG score recompute
  25. 2026-09-16 11:28 UTCVendor advisory
Show 75 more
  1. 2026-09-16 11:28 UTCGHSA enrichment
  2. 2026-09-16 05:15 UTCEPSS rescore
  3. 2026-09-15 23:35 UTCVendor advisory
  4. 2026-09-15 23:35 UTCGHSA enrichment
  5. 2026-09-15 11:44 UTCEG score recompute
  6. 2026-09-15 11:44 UTCVendor advisory
  7. 2026-09-15 11:44 UTCGHSA enrichment
  8. 2026-09-15 03:12 UTCEPSS rescore
  9. 2026-09-15 03:12 UTCEPSS rescore
  10. 2026-09-14 23:54 UTCVendor advisory
  11. 2026-09-14 23:54 UTCGHSA enrichment
  12. 2026-09-14 12:04 UTCVendor advisory
  13. 2026-09-14 12:04 UTCGHSA enrichment
  14. 2026-09-14 00:10 UTCEG score recompute
  15. 2026-09-14 00:10 UTCVendor advisory
  16. 2026-09-14 00:10 UTCGHSA enrichment
  17. 2026-09-13 12:17 UTCVendor advisory
  18. 2026-09-13 12:17 UTCGHSA enrichment
  19. 2026-09-13 00:27 UTCEG score recompute
  20. 2026-09-13 00:27 UTCVendor advisory
  21. 2026-09-13 00:27 UTCGHSA enrichment
  22. 2026-09-12 12:37 UTCVendor advisory
  23. 2026-09-12 12:37 UTCGHSA enrichment
  24. 2026-09-12 00:47 UTCVendor advisory
  25. 2026-09-12 00:47 UTCGHSA enrichment
  26. 2026-09-11 12:57 UTCEG score recompute
  27. 2026-09-11 12:57 UTCGHSA enrichment
  28. 2026-09-11 00:36 UTCGHSA enrichment
  29. 2026-09-10 12:46 UTCEG score recompute
  30. 2026-09-10 12:46 UTCGHSA enrichment
  31. 2026-09-10 00:56 UTCGHSA enrichment
  32. 2026-09-09 13:06 UTCVendor advisory
  33. 2026-09-09 13:06 UTCGHSA enrichment
  34. 2026-09-09 01:15 UTCEG score recompute
  35. 2026-09-09 01:15 UTCVendor advisory
  36. 2026-09-09 01:15 UTCGHSA enrichment
  37. 2026-09-08 22:01 UTCEPSS rescore
  38. 2026-09-08 07:45 UTCVendor advisory
  39. 2026-09-08 07:45 UTCGHSA enrichment
  40. 2026-09-07 19:55 UTCEG score recompute
  41. 2026-09-07 19:55 UTCVendor advisory
  42. 2026-09-07 19:55 UTCGHSA enrichment
  43. 2026-09-07 08:05 UTCVendor advisory
  44. 2026-09-07 08:05 UTCGHSA enrichment
  45. 2026-09-06 20:09 UTCEG score recompute
  46. 2026-09-06 20:09 UTCGHSA enrichment
  47. 2026-09-06 13:48 UTCEPSS rescore
  48. 2026-09-06 08:20 UTCGHSA enrichment
  49. 2026-09-05 20:28 UTCEG score recompute
  50. 2026-09-05 20:28 UTCGHSA enrichment
  51. 2026-09-05 08:38 UTCGHSA enrichment
  52. 2026-09-04 20:49 UTCEG score recompute
  53. 2026-09-04 20:49 UTCGHSA enrichment
  54. 2026-09-04 08:16 UTCEG score recompute
  55. 2026-09-04 08:16 UTCGHSA enrichment
  56. 2026-09-04 05:07 UTCEPSS rescore
  57. 2026-09-03 20:25 UTCGHSA enrichment
  58. 2026-09-03 08:36 UTCGHSA enrichment
  59. 2026-09-02 20:44 UTCEG score recompute
  60. 2026-09-02 20:44 UTCGHSA enrichment
  61. 2026-09-02 14:12 UTCEPSS rescore
  62. 2026-09-02 08:22 UTCGHSA enrichment
  63. 2026-09-01 20:31 UTCEG score recompute
  64. 2026-09-01 20:31 UTCGHSA enrichment
  65. 2026-09-01 13:54 UTCEPSS rescore
  66. 2026-09-01 08:41 UTCEG score recompute
  67. 2026-09-01 08:41 UTCGHSA enrichment
  68. 2026-09-01 04:40 UTCEPSS rescore
  69. 2026-09-01 04:40 UTCEPSS rescore
  70. 2026-08-31 20:49 UTCGHSA enrichment
  71. 2026-08-31 08:39 UTCGHSA enrichment
  72. 2026-08-30 20:46 UTCEG score recompute
  73. 2026-08-30 20:46 UTCGHSA enrichment
  74. 2026-08-30 19:18 UTCEPSS rescore
  75. 2026-08-30 19:17 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-79655?
CVE-2026-79655 is a high vulnerability published on August 25, 2026. A flaw was found in sos clean, a utility within the sos package. This vulnerability allows a local attacker to perform arbitrary file creation or overwrite. By crafting a malicious tar archive, an attacker can exploit a path traversal issue during tar extraction, where symlink and hardlink targets…
When was CVE-2026-79655 disclosed?
CVE-2026-79655 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update 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-2026-79655 actively exploited?
CVE-2026-79655 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 96.1% of all scored CVEs.
What is the CVSS score of CVE-2026-79655?
CVE-2026-79655 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-79655?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79655, 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-2026-79655

Explore →

Is Your Infrastructure Affected by CVE-2026-79655?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs