CodeWhale SSRF bypass via DNS pinning TOCTOU
A time-of-check-time-of-use (TOCTOU) vulnerability in CodeWhale's DNS pinning implementation allows attackers to bypass SSRF mitigations by controlling a custom DNS server to fail initial requests and succeed on secondary requests.
Disclosed 4 September 2026 · Record updated 1 October 2026
Impact
Allows full bypass of SSRF mitigations when attacker controls DNS resolver, enabling access to local resources.
Our coverage
No articles linked to this incident yet.
Sources
- github.comhttps://github.com/advisories/GHSA-6v2g-fpxh-pmmh
