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🛡️ CVE-2026-3087 on Ubuntu — python2.7

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

If shutil.unpack_archive() is given a ZIP archive with an absolute Windows path containing a drive (C:\\...) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.

Distribution advisory

This page covers CVE-2026-3087 as tracked by Ubuntu, for the package python2.7. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Affected software

UBUNTU-CVE-2026-3087 is recorded against 12 packages.

  • python2.7
  • python3.10
  • python3.11
  • python3.12
  • python3.13
  • python3.14
  • python3.4
  • python3.5
  • python3.6
  • python3.7
  • python3.8
  • python3.9

Timeline and source

Published on 27 April 2026 and last revised on 28 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)

Other advisories for this package

python2.7 has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2026-3087 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-04-27
Updated 2026-08-20
Modified 2026-05-28
Fix URL N/A

Affected Packages

Software From version Fixed in
python2.7
python3.10
python3.11
python3.12
python3.13
python3.14
python3.4
python3.5
python3.6
python3.7
python3.8
python3.9

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