CVE-2026-74859

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH confidence

Score 6.8 from GitHub Security Advisory published 2026-09-08. a secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: None knownExposed: 0

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

The shell theme installer in gnome-tweaks extracts user-supplied ZIP archives without validating archive member paths. As a result, a crafted theme archive can write files outside ~/.themes by using ../ path traversal, absolute paths, or symlink entries.

CVSS v3
6.8
EG Score
6.8(high)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Sep 8, 2026
No patch confirmed yet. Sources: redhat.
redhat

2529702 – (CVE-2026-74859) CVE-2026-74859 gnome-tweaks: path traversal in theme installer

https://bugzilla.redhat.com/show_bug.cgi?id=2529702

Vendor Advisories for CVE-2026-74859(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 48× 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. 2026-09-24 23:11 UTCEG score recompute
  2. 2026-09-24 23:11 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 22:24 UTCEG score recompute
  5. 2026-09-23 22:24 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-22 22:11 UTCEG score recompute
  8. 2026-09-22 22:11 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-21 21:58 UTCEG score recompute
  11. 2026-09-21 21:58 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-20 21:47 UTCEG score recompute
  14. 2026-09-20 21:47 UTCGHSA enrichment
  15. 2026-09-20 20:16 UTCEPSS rescore
  16. 2026-09-19 21:34 UTCEG score recompute
  17. 2026-09-19 21:34 UTCGHSA enrichment
  18. 2026-09-18 21:21 UTCEG score recompute
  19. 2026-09-18 21:21 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-17 20:20 UTCGHSA enrichment
  22. 2026-09-16 18:56 UTCEG score recompute
  23. 2026-09-16 18:56 UTCGHSA enrichment
  24. 2026-09-16 14:08 UTCEPSS rescore
  25. 2026-09-16 05:15 UTCEPSS rescore
Show 23 more
  1. 2026-09-15 18:41 UTCEG score recompute
  2. 2026-09-15 18:41 UTCGHSA enrichment
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-14 18:21 UTCGHSA enrichment
  5. 2026-09-13 17:48 UTCEG score recompute
  6. 2026-09-13 17:48 UTCGHSA enrichment
  7. 2026-09-12 17:36 UTCGHSA enrichment
  8. 2026-09-11 17:24 UTCEG score recompute
  9. 2026-09-11 17:24 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-10 17:04 UTCEG score recompute
  12. 2026-09-10 17:04 UTCGHSA enrichment
  13. 2026-09-10 09:35 UTCEPSS rescore
  14. 2026-09-09 16:52 UTCEG score recompute
  15. 2026-09-09 16:52 UTCGHSA enrichment
  16. 2026-09-09 16:03 UTCEG score recompute
  17. 2026-09-09 16:03 UTCGHSA enrichment
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-08 19:50 UTCGHSA enrichment
  20. 2026-09-08 09:39 UTCEG score recompute
  21. 2026-09-08 09:39 UTCGHSA enrichment
  22. 2026-09-08 09:10 UTCEG score recompute
  23. 2026-09-08 09:08 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-74859?
CVE-2026-74859 is a medium vulnerability published on September 8, 2026. The shell theme installer in gnome-tweaks extracts user-supplied ZIP archives without validating archive member paths. As a result, a crafted theme archive can write files outside ~/.themes by using ../ path traversal, absolute paths, or symlink entries.
When was CVE-2026-74859 disclosed?
CVE-2026-74859 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74859 actively exploited?
CVE-2026-74859 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 94.2% of all scored CVEs.
What is the CVSS score of CVE-2026-74859?
CVE-2026-74859 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-74859?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74859, 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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