CVE-2025-71343: picklescan before 0.0.30 fails to detect malicious pickle files that exploit lib2to3.pgen2.pgen.ParserGenerator.make_label function in the reduce method. Attackers can craft malici
picklescan before 0.0.30 fails to detect malicious pickle files that exploit lib2to3.pgen2.pgen.ParserGenerator.make_label function in the reduce method. Attackers can craft malicious pickle files with embedded code that evades detection but executes arbitrary commands when pickle.load() is called.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-71343
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2025-713430.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-71343 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for picklescan
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2025-71375: picklescan before 0.0.34 fails to detect the _operator.methodcaller built-in function when sca…nvd · 2026-07-04
- highCVE-2025-71373: picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files,…nvd · 2026-07-04
- highCVE-2025-71372: Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran.getlincoef gadget in pick…nvd · 2026-07-04
- highCVE-2025-71369: picklescan before 0.0.28 fails to detect malicious pickle files that use torch.utils.data.data…nvd · 2026-07-04
- highCVE-2025-71367: picklescan before 0.0.34 fails to detect _operator.attrgetter function calls in pickle payload…nvd · 2026-07-04
- highCVE-2025-71366: picklescan before 0.0.28 fails to detect malicious torch.utils.bottleneck.__main__.run_cprofil…nvd · 2026-07-04
More from NVD Recent CVEs
- highCVE-2026-58281: Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized at…2026-07-11
- mediumCVE-2026-10660: The Bluetooth BAP Broadcast Assistant GATT client in subsys/bluetooth/audio/bap_broadcast_assi…2026-07-11
- lowCVE-2026-61870: ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the VIFF encoder when memo…2026-07-11
- lowCVE-2026-61861: ImageMagick before 7.1.2-26 contains a use-after-free vulnerability in the FormatMagickCaption…2026-07-11
- lowCVE-2026-61858: ImageMagick before 7.1.2-26 contains a policy bypass vulnerability in the APNG encoder and ext…2026-07-11