CVE-2025-71343

picklescan - Arbitrary Code Execution via lib2to3.pgen2.pgen.ParserGenerator.make_label Detection Bypass

CVSS 7.6 HIGHCWE-502

Vexday Risk Score

18Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 7.6EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

04 jul 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Produtos afetados

picklescan · picklescan

Referências

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-p9w7-82w4-7q8m https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-lib2to3-pgen2-pgen-parsergenerator-make-label-detection-bypass