5.3

CVE-2026-4360: Tarfile.extract() doesn't fully respect filter parameter

Modified
AliasesALPINE-CVE-2026-4360RHSA-2026:47892RHSA-2026:47896
Published 30-06-2026Last modified 13-08-2026

Vulnerability summary

CVE-2026-4360 is a medium (CVSS 5.3) Improper Preservation of Permissions vulnerability in python software foundation cpython. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 41.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 2, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 31 · Related 30
OPENSUSE-SU-2026:11426-1OPENSUSE-SU-2026:11427-1OPENSUSE-SU-2026:11428-1OPENSUSE-SU-2026:11429-1OPENSUSE-SU-2026:11534-1OPENSUSE-SU-2026:11597-1

Timeline

  1. 30-06-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

10 scores · 8 sources · 2 versions

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.48% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, administrative account, user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat46 products
  • python-unversioned-command< 0:3.14.6-2.1.hum1
  • python3< 0:3.14.6-2.1.hum1
  • python3-debug< 0:3.14.6-2.1.hum1
  • python3-devel< 0:3.14.6-2.1.hum1
  • python3-idle< 0:3.14.6-2.1.hum1
Chainguard5 products
  • python-3.10< 3.10.20-r10
  • python-3.11< 3.11.15-r8
  • python-3.12< 3.12.13-r10
  • python-3.13< 3.13.14-r2
  • python-3.14< 3.14.6-r3
Wolfi5 products
  • python-3.10< 3.10.20-r10
  • python-3.11< 3.11.15-r8
  • python-3.12< 3.12.13-r10
  • python-3.13< 3.13.14-r2
  • python-3.14< 3.14.6-r3
Ubuntu4 products
  • python3.10< 3.10.12-1~22.04.18
  • python3.12< 3.12.3-1ubuntu0.17
  • python3.13All versions (No fix recorded)
  • python3.14All versions (No fix recorded) | < 3.14.4-1ubuntu0.2
Debian3 products
  • pypy3All versions (No fix recorded) | < 8.0.0+dfsg-1
  • python3.13< 3.13.15-1 | < 3.13.5-2+deb13u5
  • python3.14< 3.14.7-1
Alpine1 product
  • python3< 3.12.14-r0 | < 3.14.7-r0
Python1 product
Python software foundation1 product
  • cpython< 3.10.21 | ≥ 3.11.0, < 3.11.16 | ≥ 3.12.0, < 3.12.14 | ≥ 3.13.0, < 3.13.15 | ≥ 3.14.0, < 3.14.7 | ≥ 3.15.0a1, < 3.15.0b4

8 vendors · 66 products

References

32 links
Show all 32 references