CVE-2025-71368 picklescan - Arbitrary Code Execution via Undetected doctest.debug_script
Attackers can execute arbitrary code by crafting malicious pickle files that bypass picklescan detection via doctest.debug_script.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-71368?
CVE-2025-71368 is a high-severity unsafe deserialization vulnerability in picklescan, published on 30 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
picklescan before 0.0.30 fails to detect the doctest.debug_script function when analyzing pickle files, allowing attackers to execute arbitrary code. Remote attackers can craft malicious pickle files embedding doctest.debug_script calls that bypass picklescan detection and execute arbitrary commands upon pickle.load invocation.
Weakness: CWE-502
Which versions are affected by CVE-2025-71368?
2 open source packages ship an affected version, including picklescan.
| Package | Affected | Fixed in |
|---|---|---|
picklescan PyPI | All versions | 0.0.30 |
picklescan PyPI | All versions | 0.0.30 |
How do I fix CVE-2025-71368?
Upgrade picklescan to 0.0.30 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-71368 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71368 exists.
Sources
Also known as GHSA-354x-p5rw-9f85, GHSA-fqq6-7vqf-w3fg.