Deserialization in Picklescan
CVE-2026-53874
picklescan before 1.0.1 contains an unsafe deserialization vulnerability allowing unauthenticated users to execute arbitrary code by hiding eval calls nested under callable objects via getattr. Attackers can embed malicious code in pickle files that evades detection but executes when the pickle is loaded from untrusted sources.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (44.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.005 · change: -0.002
Affected products
- Picklescan — versions 0, 1.0.1
Weakness classification (CWE)
References
- github.com/mmaitre314/picklescan/security/advisories/GHSA-9m3x-qqw2-h32h (vendor-advisory)
- www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-obfuscated… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-53874?
- CVE-2026-53874 is a critical-severity vulnerability in Picklescan, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-06-17.
- How severe is CVE-2026-53874?
- Critical severity. CVSS v3 base score is 9.8 out of 10.