CVE-2026-75856: CodeWhale before 0.8.64 contains a server-side request forgery bypass vulnerability in DNS pinning logic that

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HIGH 8.6REMOTE

CVE-2026-75856 is a high-severity flaw (CVSS 8.6) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
CISA SSVC: public proof of concept
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-08-18
Last modified	2026-10-22

Publisher (CNA): VulnCheck

Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-08-18Published CVE record published
2026-10-22 22:10 UTCUpdated Record last modified

Exact fixes by distribution

Rust (Cargo) · deepseek-tui · NO FIX YET · vulnerable: >= 0.8.5, <= 0.8.41 · source

npm · deepseek-tui · FIXED · 0.8.41 · vulnerable: >= 0.8.5, < 0.8.41 · source

npm install deepseek-tui@">=0.8.41" npm ls deepseek-tui

Rust (Cargo) · codewhale-tui · FIXED · 0.8.64 · vulnerable: >= 0.8.41, < 0.8.64 · source

Set codewhale-tui >= 0.8.64 in Cargo.toml, then run: cargo update -p codewhale-tui

npm · codewhale · FIXED · 0.8.64 · vulnerable: >= 0.8.41, < 0.8.64 · source

npm install codewhale@">=0.8.64" npm ls codewhale

Fedora 46 · python-trimesh · FIXED · 5.2.0-1.fc46 · FEDORA-2026-429b4bad4c · source

sudo dnf upgrade --advisory=FEDORA-2026-429b4bad4c

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/Hmbown/CodeWhale/security/advisories/GHSA-6v2g-fpxh-pmmh

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-75856?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-75856 being exploited?

CVE-2026-75856 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-75856 affect?

CVE-2026-75856 affects affected software. Severity is high (CVSS 8.6). 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 s

How urgent is CVE-2026-75856?

Priority 49/100. High severity; CISA SSVC: public proof of concept; Remotely exploitable, no login, no user action

References

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