CVE-2026-115905
zip: Critical Parser Differential & Security Control Bypass via Dual-Header Inconsistencies (Zip Cloaking) Leading to Arbitrary File Overwrite & RCE
zip is a zip library for Rust that supports reading and writing simple ZIP files. Through 9.0.4, ZipArchive treats Central Directory File Header filenames as authoritative while ZipStreamReader extracts using Local File Header filenames without reconciling the duplicate metadata in src/read/stream.rs. A crafted archive can therefore appear benign to a component that inspects the central directory but cause a streaming extractor to write a different attacker-selected path and content, potentially overwriting files used by a downstream service. This issue is fixed in version 9.0.5.
Fixes and workarounds
Fix
zip (crates.io): OSV reports a fixed version 9.0.5. Check the advisory for supported release branches.
Source: OSV GHSA-m665-v7pm-7grjAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| zip2 zip-rs |
< 9.0.5 (affected) | CNA: GitHub_M |
zipzip
crates.io |
≥ 0; < 9.0.5 (affected, semver); OSV events: introduced 0; fixed 9.0.5Source events (semver)Other versions: unaffected |
OSV GHSA-m665-v7pm-7grj |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 10.0 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L | CNA: GitHub_M |
Exploit evidence
- https://github.com/zip-rs/zip2/security/advisories/GHSA-m665-v7pm-7grj
exploit · ADP: CISA-ADP
References
- https://github.com/zip-rs/zip2/security/advisories/GHSA-m665-v7pm-7grjCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/zip-rs/zip2/commit/8068ab480ccf8daa7411424e365fcdbe6d09443eCNA: GitHub_M · x_refsource_MISC
- https://github.com/zip-rs/zip2/releases/tag/v9.0.5CNA: GitHub_M · x_refsource_MISC
- https://github.com/zip-rs/zip2/security/advisories/GHSA-m665-v7pm-7grjADP: CISA-ADP · exploit
- https://github.com/advisories/GHSA-m665-v7pm-7grjOSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-m665-v7pm-7grjOSV / GitHub Security Advisories · osv
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