CVE-2025-71354 picklescan - Remote Code Execution via idlelib.debugobj.ObjectTreeItem.SetText
Attackers can bypass picklescan detection to execute arbitrary code via malicious pickle files exploiting idlelib internals.
- 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-2025-71354?
CVE-2025-71354 is a high-severity unsafe deserialization vulnerability in picklescan, published on 24 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 malicious pickle files that exploit idlelib.debugobj.ObjectTreeItem.SetText function in reduce methods. Attackers can craft pickle files with embedded code that bypasses picklescan detection and executes arbitrary commands when pickle.load() is called.
Weakness: CWE-502
Which versions are affected by CVE-2025-71354?
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-2025-71354?
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-2025-71354 being exploited?
There is no known exploitation of CVE-2025-71354 in the wild and no public exploit code.
Sources
Also known as GHSA-3vg9-h568-4w9m, PYSEC-2026-1781.