by Kastro
Paper/Archive/CVE-2026-75856

CVE-2026-75856

Hmbown CodeWhale — CodeWhale before 0.8.64 SSRF Bypass via DNS Pinning TOCTOU

EPSS 0.5%public exploitCVSS 9.2
critical.is priorityof 100
46
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 42.5.425 × 208.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

CodeWhale before 0.8.64 contains a server-side request forgery bypass vulnerability in DNS pinning logic that fails to prevent time-of-check-time-of-use attacks. Attackers can manipulate DNS responses to fail initial resolution checks and succeed on secondary requests, allowing requests to internal IP addresses and bypassing SSRF mitigations.

Affected

ProductAffectedFixed inSource
CodeWhale0.8.5 – < 0.8.410.8.41CNA
CodeWhale0.8.5 – < 0.8.410.8.41CNA
CodeWhale0.8.41 – < 0.8.640.8.64CNA
CodeWhale0.8.41 – < 0.8.640.8.64CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
VulnCheck (CNA)8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

exploitgithub.com/Hmbown/CodeWhale/security/advisories/GHSA-6v2g-fpxh-pmmhpatchgithub.com/Hmbown/CodeWhale/commit/26de44a8bd5051f8f944ea60b2c37ae1d2b7d25ewriteupvulncheck.com/advisories/codewhale-before-ssrf-bypass-via-dns-pinning-toctou