CVE-2025-71367 picklescan - Remote Code Execution via _operator.attrgetter Detection Bypass
Attackers can bypass security checks in picklescan to execute arbitrary code via malicious pickle files using _operator.attrgetter.
- 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-2025-71367?
CVE-2025-71367 is a high-severity unsafe deserialization vulnerability in picklescan, published on 4 Jul 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 0.0.34 fails to detect _operator.attrgetter function calls in pickle payloads, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using _operator.attrgetter in reduce methods to execute arbitrary code when pickle.load() processes the file.
Weakness: CWE-502
Which versions are affected by CVE-2025-71367?
2 open source packages ship an affected version, including picklescan.
| Package | Affected | Fixed in |
|---|---|---|
picklescan PyPI | All versions | 0.0.34 |
picklescan PyPI | All versions | 0.0.34 |
How do I fix CVE-2025-71367?
Upgrade picklescan to 0.0.34 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-71367 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71367 exists.
Sources
Also known as GHSA-46h3-79wf-xr6c, GHSA-j2vq-r4j3-cj5m.