Vulnerability Description
zip is a zip library for Rust that supports reading and writing simple ZIP files. From 0.6.0 until 9.0.0, the AES entry reader in src/aes.rs verifies its HMAC only when the attacker-controlled data counter reaches zero. If the underlying bounded reader reaches the real end of the archive while data_remaining is still positive, or if an encrypted entry has no payload, the reader can return a clean end of stream without reading and comparing the authentication tag. Applications using by_index_decrypt, by_name_decrypt, by_path_decrypt, or password-enabled by_index_with_options can therefore accept modified plaintext without an authentication error. This issue is fixed in version 9.0.0.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/zip-rs/zip2/commit/ec265db0b0602f8ffb9479327397bddefb7e2216
- https://github.com/zip-rs/zip2/releases/tag/v9.0.0
- https://github.com/zip-rs/zip2/security/advisories/GHSA-8hxf-qr8p-62x4
- https://github.com/zip-rs/zip2/security/advisories/GHSA-8hxf-qr8p-62x4
FAQ
What is CVE-2026-115906?
CVE-2026-115906 is a vulnerability with a CVSS score of 6.5 (MEDIUM). zip is a zip library for Rust that supports reading and writing simple ZIP files. From 0.6.0 until 9.0.0, the AES entry reader in src/aes.rs verifies its HMAC only when the attacker-controlled data co...
How severe is CVE-2026-115906?
CVE-2026-115906 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115906?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.