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CVE-2026-75856 is a server-side request forgery bypass in CodeWhale's DNS-pinning protections. In affected versions, DNS resolution is checked separately from the subsequent outbound request without safely binding the validated result to the connection. An attacker can manipulate DNS responses so that an initial resolution check fails or does not identify a prohibited destination, while a later lookup resolves the attacker-controlled hostname to an internal address. This time-of-check-time-of-use condition bypasses SSRF restrictions and causes the URL-fetching functionality to issue requests to internal network targets.
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No public exploit code observed for this vulnerability.
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4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A time-of-check/time-of-use DNS-pinning bypass in CodeWhale's fetch_url functionality. By controlling DNS responses, an attacker can make validation-time lookups fail and later resolve the target hostname to loopback or private IP space, enabling SSRF against local services, private-network resources, and potentially cloud credentials.
An SSRF bypass vulnerability in CodeWhale's DNS pinning logic that allows TOCTOU-based manipulation of DNS resolution to reach internal IP addresses despite SSRF protections.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.