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No exploitation reportedFix available

CVE-2023-41105

No exploitation reported by the sources we read.

  • Published2023-08-23
  • WeaknessCWE-426

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in Python 3.11 through 3.11.4. If a path containing '\0' bytes is passed to os.path.normpath(), the path will be truncated unexpectedly at the first '\0' byte. There are plausible cases in which an application would have rejected a filename for security reasons in Python 3.10.x or earlier, but that filename is no longer rejected in Python 3.11.x.

Timeline

dates in UTC
  1. 2023-08-2307:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-41105?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-41105?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP · OSV
Python
BranchAffectedFixed in
3.11≥ 3.11.0, ≤ 3.11.4no fix published
3.11≥ 3.11, ≤ 3.11.4no fix published
Netapp active iq unified manager
BranchAffectedFixed in
—all versionsno fix published
libpython
BranchAffectedFixed in
3.11≥ 3.11.0, < 3.11.53.11.5

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • python3.11AlmaLinux:9all versions · fixed in 3.11.5-1.el9_3and 6 other packages
  • python3.11AlmaLinux:8all versions · fixed in 3.11.5-1.el8_9and 7 other packages

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2024-10-03
  • OpenCVESSVC decisionnone—
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDweakness (CWE)CWE-426read 2026-10-23
  • FIRST EPSSEPSS score2.6 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2023-08-23
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-41105?

An issue was discovered in Python 3.11 through 3.11.4. If a path containing '\0' bytes is passed to os.path.normpath(), the path will be truncated unexpectedly at the first '\0' byte. There are plausible cases in which an application would have rejected a filename for security reasons in Python 3.10.x or earlier, but that filename is no longer rejected in Python 3.11.x.

Is CVE-2023-41105 actively exploited?

Active exploitation of CVE-2023-41105 has not been confirmed. Its EPSS score was 2.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-41105?

CVE-2023-41105 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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