VulnerabilityDeferred

CVE-2025-71361

picklescan before 0.0.29 fails to detect malicious idlelib.calltip.Calltip.fetch_tip calls in pickle files, allowing remote code execution.

HIGH 7.6EPSS 0.60%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

picklescan before 0.0.29 fails to detect malicious idlelib.calltip.Calltip.fetch_tip calls in pickle files, allowing remote code execution. Attackers can embed undetected payloads in pickle files that execute arbitrary code when loaded via pickle.load().

CVSS 4.0: 7.6 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.60% probability · 47th percentile
CISA KEV: Not listed
Weakness: CWE-95
Source: disclosure@vulncheck.com

References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-8r4j-24qv-fmq9
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-undetected-idlelib-calltip-calltip-fetch-tip
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-8r4j-24qv-fmq9

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.