CrewAI before 1.15.1 contains a server-side request forgery vulnerability in the validate_url function that performs one-shot DNS resolution and blocklist checks before returning the original URL unchanged. Attackers can bypass the security filter by supplying URLs that redirect to internal addresses or use DNS rebinding techniques to access internal services and cloud metadata endpoints.
https://www.vulncheck.com/advisories/crewai-ssrf-filter-bypass-via-http-redirect-in-scrape-tools
https://github.com/crewAIInc/crewAI/releases/tag/1.15.1
https://github.com/crewAIInc/crewAI/pull/6331
https://github.com/crewAIInc/crewAI/issues/6520
https://github.com/crewAIInc/crewAI/commit/5d4851eac797cafc45b726f65747fe2c9520fc42
Published: 2026-07-13
Updated: 2026-07-13
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
Severity: High
Base Score: 7.4
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Severity: High
Base Score: 8.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Severity: High