CVE-2026-109237CWE-502insecure-deserialization

CVE-2026-109237

High · published October 12, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
24.2
In the wild
Unconfirmed
What it is

Crawl4AI from 0.9.0 before 0.9.4 contains an untrusted-config gate bypass that allows non-admin API clients to construct forbidden config objects by wrapping them in dict-type wrappers. Attackers can send a laundered LLMConfig with api_token set to an env reference via /config/dump to read SECRET_KEY and provider keys, enabling admin JWT forgery.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00324 · 24.2th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-10-12T21:17Z
References (2)
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-5w5p-vcv6-mm3f · [email protected]https://www.vulncheck.com/advisories/crawl4ai-0.9.0-before-0.9.4-untrusted-config-gate-bypass-leaks-environment-variables · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:04Z
    Crawl4AI 0.9.0 before 0.9.4 Untrusted Config Gate Bypass Leaks Environment Variables
    cvelistv5
  • 12 OCT 16:04Z
    Crawl4AI 0.9.0 before 0.9.4 Untrusted Config Gate Bypass Leaks Environment Variables
    cvelistv5