What is CVE-2026-119120?

CVE-2026-119120 is a high-severity vulnerability in Unclecode Crawl4ai, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2026-10-29.

How severe is CVE-2026-119120?

High severity. CVSS v3 base score is 7.5 out of 10.

Deserialization in Unclecode Crawl4ai

CVE-2026-119120

Crawl4AI from 0.9.0 before 0.9.5 fails to filter the CosineStrategy model_name field in untrusted Docker API request bodies, allowing authenticated clients to choose which HuggingFace model the server loads. Attackers can reference a malicious repository with a pickle weight file to execute Python code under PyTorch below 2.6, or exhaust disk and memory.

Vulnerability class: Insecure Deserialization

Published 2026-10-29 · last modified 2026-10-29.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Unclecode Crawl4ai

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/unclecode/crawl4ai/security/advisories/GHSA-f856-7xp9-w3cc (vendor-advisory)
www.vulncheck.com/advisories/crawl4ai-0.9.0-before-0.9.5-untrusted-model-loadin… (third-party-advisory)

Frequently asked questions

What is CVE-2026-119120?: CVE-2026-119120 is a high-severity vulnerability in Unclecode Crawl4ai, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2026-10-29.
How severe is CVE-2026-119120?: High severity. CVSS v3 base score is 7.5 out of 10.