{"id":"CVE-2026-115906","sourceIdentifier":"security-advisories@github.com","published":"2026-10-26T17:17:17.993","lastModified":"2026-10-31T02:17:29.267","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"zip-rs","product":"zip2","versions":[{"version":">= 0.6.0, < 9.0.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-31T01:32:24.718914Z","id":"CVE-2026-115906","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-354"},{"lang":"en","value":"CWE-1284"}]}],"references":[{"url":"https://github.com/zip-rs/zip2/commit/ec265db0b0602f8ffb9479327397bddefb7e2216","source":"security-advisories@github.com"},{"url":"https://github.com/zip-rs/zip2/releases/tag/v9.0.0","source":"security-advisories@github.com"},{"url":"https://github.com/zip-rs/zip2/security/advisories/GHSA-8hxf-qr8p-62x4","source":"security-advisories@github.com"},{"url":"https://github.com/zip-rs/zip2/security/advisories/GHSA-8hxf-qr8p-62x4","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}