CVE-2026-91940 crawl4ai - Arbitrary File Write

crawl4ai < 0.9.3 contains an arbitrary file write vulnerability caused by improper validation of untrusted configuration fields in PDFContentScrapingStrategy, letting attackers write arbitrary files, exploit requires crafted config bodies.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.46% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Arbitrary File Write
Impact
File System Write
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-22

Vendor fix

Update to version 0.9.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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