CVE-2026-4360

MEDIUMNVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory (severity: LOW) published 2026-06-30. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
14.5%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 9, 2026

Advisory Details (8)

Auto-updated Jul 9, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic
https://mail.python.org/archives/list/security-announce@python.org/thread/TWZW2PC2AZOV6FENIHFSRC63OM7MBGSB/
github_pr

gh-151987: Pass filter_function to TarFile._extract_one() during .extract()

Fix merged in python/cpython PR #151988 on 2026-06-29 — awaiting tagged release

https://github.com/python/cpython/pull/151988
generic

Tarfile.extract doesn't fully respect the filter parameter · Issue #151987 · python/cpython · GitHub

https://github.com/python/cpython/issues/151987
github_commit

commit eee3ddf0ca10 (python/cpython)

Fix landed in python/cpython commit eee3ddf0ca10 — awaiting tagged release

https://github.com/python/cpython/commit/eee3ddf0ca10283cc7fea724aae9cd8665f8d15e
github_commit

commit d2b2f5eacab4 (python/cpython)

Fix landed in python/cpython commit d2b2f5eacab4 — awaiting tagged release

https://github.com/python/cpython/commit/d2b2f5eacab4dd48446b63340613b05dcbbf0b44
github_commit

commit 7ccdbaba2c54 (python/cpython)

Fix landed in python/cpython commit 7ccdbaba2c54 — awaiting tagged release

https://github.com/python/cpython/commit/7ccdbaba2c54250a70d7f25632152df7655a5e0a
github_commit

commit 7b57e8d51446 (python/cpython)

Fix landed in python/cpython commit 7b57e8d51446 — awaiting tagged release

https://github.com/python/cpython/commit/7b57e8d51446297b8c7c482d224bc5f1938e4301
github_commit

commit 5e0ef3f1afe8 (python/cpython)

Fix landed in python/cpython commit 5e0ef3f1afe8 — awaiting tagged release

https://github.com/python/cpython/commit/5e0ef3f1afe892e4f64eb83368db57ac4c40cba0

Vendor Advisories for CVE-2026-4360(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 10× in last 7d / 43× 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. 2026-07-23 03:14 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 02:29 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-16 23:55 UTCGHSA enrichment
  10. 2026-07-16 17:03 UTCEPSS rescore
  11. 2026-07-16 01:56 UTCGHSA enrichment
  12. 2026-07-15 16:57 UTCEPSS rescore
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-15 03:56 UTCGHSA enrichment
  15. 2026-07-15 02:00 UTCEPSS rescore
  16. 2026-07-15 02:00 UTCEPSS rescore
  17. 2026-07-14 05:57 UTCGHSA enrichment
  18. 2026-07-13 22:31 UTCEPSS rescore
  19. 2026-07-13 07:58 UTCGHSA enrichment
  20. 2026-07-13 06:13 UTCEPSS rescore
  21. 2026-07-12 09:59 UTCGHSA enrichment
  22. 2026-07-12 05:46 UTCEPSS rescore
  23. 2026-07-11 11:59 UTCGHSA enrichment
  24. 2026-07-11 08:27 UTCEPSS rescore
  25. 2026-07-10 14:00 UTCGHSA enrichment
Show 18 more
  1. 2026-07-09 19:10 UTCEPSS rescore
  2. 2026-07-09 15:59 UTCEG score recompute▲ 3.30
  3. 2026-07-09 15:59 UTCGHSA enrichment
  4. 2026-07-09 02:56 UTCNVD updateCVSS v3 → 5.3 · severity → MEDIUM
  5. 2026-07-08 15:16 UTCEPSS rescore
  6. 2026-07-07 13:46 UTCEPSS rescore
  7. 2026-07-06 16:27 UTCEPSS rescore
  8. 2026-07-06 16:10 UTCGHSA enrichment
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 16:20 UTCGHSA enrichment
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-06-30 16:34 UTCEG score recompute▲ 2.00
  15. 2026-06-30 16:34 UTCGHSA enrichment
  16. 2026-06-30 16:32 UTCNVD updateCVSS v3 → 2 · CVSS v4 → 2
  17. 2026-06-30 16:31 UTCEG score recompute
  18. 2026-06-30 16:31 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-4360?
CVE-2026-4360 is a medium vulnerability published on June 30, 2026. In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.
When was CVE-2026-4360 disclosed?
CVE-2026-4360 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4360 actively exploited?
CVE-2026-4360 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-4360?
CVE-2026-4360 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-4360?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4360, 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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