CVE-2026-115906: medium-severity vulnerability in zip-rs zip2
zip: AES Entry HMAC Authentication Bypass on Premature EOF
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.2%
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Affected products
zip-rs · zip2Related CVEs — zip-rs zip2
In the same product, most dangerous first.
CVE-2025-29787HIGHzip Vulnerable to Incorrect Path Canonicalization During Archive Extraction, Leading to Arbitrary File WriteEPSS 0.6%CVE-2026-115909HIGHzip: Unbounded Symlink-Target Handling Can Abort Or Exhaust Memory During ExtractionEPSS 0.5%CVE-2026-115908HIGHzip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically. (The defense against CVE-2025-29787 was broken in v7.2.0)EPSS 0.4%CVE-2026-115907HIGHzip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed sizeEPSS 0.4%CVE-2026-115905CRITICALzip: Critical Parser Differential & Security Control Bypass via Dual-Header Inconsistencies (Zip Cloaking) Leading to Arbitrary File Overwrite & RCEEPSS 0.3%