What is CVE-2026-53873?

CVE-2026-53873 is a critical-severity vulnerability in Picklescan, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.8/10. Published 2026-06-17.

How severe is CVE-2026-53873?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Picklescan

CVE-2026-53873

picklescan before 1.0.4 contains an incomplete blocklist for the profile module that fails to block the module-level profile.run() function, allowing attackers to achieve arbitrary code execution via exec(). Attackers can craft malicious pickle files calling profile.run(statement) to execute arbitrary Python code while picklescan reports zero security issues.

Published 2026-06-17 · last modified 2026-06-17.

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 (39.9th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.005 · change: -0.002

Affected products

Picklescan — versions 0, 1.0.4

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

github.com/mmaitre314/picklescan/security/advisories/GHSA-7wx9-6375-f5wh (vendor-advisory)
www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-profile-ru… (third-party-advisory)

Frequently asked questions

What is CVE-2026-53873?: CVE-2026-53873 is a critical-severity vulnerability in Picklescan, classified under Incomplete List of Disallowed Inputs. CVSS score: 9.8/10. Published 2026-06-17.
How severe is CVE-2026-53873?: Critical severity. CVSS v3 base score is 9.8 out of 10.