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.

EPSS: 0.005 (38.9th percentile) — read the EPSS interpretation.

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.

Affected products

Picklescan — versions 0, 1.0.4

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (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.