{"id":"CVE-2026-91940","title":"crawl4ai before 0.9.3 contains an arbitrary file write vulnerability in PDFContentScrapingStrategy where the _filter_untrusted_fields function fails to validate untrusted configuration fields","summary":"crawl4ai before 0.9.3 contains an arbitrary file write vulnerability in PDFContentScrapingStrategy where the _filter_untrusted_fields function fails to validate untrusted configuration fields. Attackers can submit crafted config bodies w…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-22"],"vendor":"unclecode","product":"crawl4ai","affected":["crawl4ai >= 0.9.0 < 0.9.3"],"published":"2026-09-15","updated":"2026-09-16","sourceUpdated":"2026-09-16T20:15:36.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91940","references":[{"url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-xpp7-j28w-2gvx","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/crawl4ai-before-0.9.3-arbitrary-file-write-via-pdfcontentscrapingstrategy","label":"disclosure@vulncheck.com"},{"url":"https://github.com/unclecode/crawl4ai/security/advisories/GHSA-xpp7-j28w-2gvx","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-15T15:46:54.453930Z"},"ingestedAt":"2026-09-15T15:39:12.924Z","epss":0.00421,"epssPercentile":0.35974,"slug":"CVE-2026-91940","body":"## Overview\n\ncrawl4ai before 0.9.3 contains an arbitrary file write vulnerability in PDFContentScrapingStrategy where the _filter_untrusted_fields function fails to validate untrusted configuration fields. Attackers can submit crafted config bodies with malicious image_save_dir paths to write attacker-controlled bytes into any directory accessible to the service account.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":204273,"id":"CVE-2026-91940","ts":1789490441887,"field":"exploit_available","old":"false","new":"true"}]}