CVE-2025-40909 (GCVE-0-2025-40909)

Vulnerability from cvelistv5 – Published: 2025-05-30 12:20 – Updated: 2026-04-18 14:15
VLAI
Title
Perl threads have a working directory race condition where file operations may target unintended paths
Summary
Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6
Severity
5.9 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-689 - Permission Race Condition During Resource Copy
  • CWE-426 - Untrusted Search Path
Assigner
References
Impacted products
Vendor Product Version
perl perl Affected: 5.13.6 , < 5.41.13 (custom)
Create a notification for this product.
Credits
Vincent Lefevre
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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