CVE-2025-71341 picklescan - Remote Code Execution via Undetected profile.Profile.runctx
Attackers can achieve remote code execution by crafting malicious pickle files that bypass picklescan's detection of profile.Profile.runctx.
- 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
- Available
What is CVE-2025-71341?
CVE-2025-71341 is a high-severity unsafe deserialization vulnerability in picklescan, published on 23 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 0.0.29 fails to detect the profile.Profile.runctx function when analyzing pickle files, allowing attackers to embed undetected malicious code. Remote attackers can craft malicious pickle files using profile.Profile.runctx in the reduce method to achieve remote code execution when the pickle file is loaded.
Weakness: CWE-502
Which versions are affected by CVE-2025-71341?
3 open source packages ship an affected version, including picklescan.
| Package | Affected | Fixed in |
|---|---|---|
picklescan PyPI | All versions | 0.0.29 |
picklescan PyPI | All versions | 0.0.29 |
picklescan PyPI | All versions | 0.0.29 |
How do I fix CVE-2025-71341?
Upgrade picklescan to 0.0.29 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-71341 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71341 exists.
Sources
Also known as GHSA-6vqj-c2q5-j97w, PYSEC-2026-4132.