zip is a zip library for Rust that supports reading and writing simple ZIP files.
CVE-2026-115909
Summary The symbolic-link branch of ZipArchive::extractinternal() allocates a buffer using an attacker-declared size before reading any entry data. A 112-byte archive terminates the extracting process with SIGABRT through this infallible allocation. Details rust [cfg(any(unix, windows))] if file.issymlink() { let mut target = Vec::withcapacity(file.size() as usize); // @audit unbounded memory allocation file.readtoend(&mut target)?; drop(file); makesymlink(&outpath, &target, &self.shared.files)?; continue; } [src/read/mod.rs#L399-L405](https://github.com/zip-rs/zip2/blob/6f09b3064ec87c3a69ea9f3413f9f9638b4aa446/src/read/mod.rs#L399-L405) (reviewed commit 6f09b306); the same code is at [src/read.rs#L417-L418](https://github.com/zip-rs/zip2/blob/v8.6.0/src/read.rs#L417-L418) in released v8.6.0. Both inputs are attacker-controlled: [ZipFile::size()](https://github.com/zip-rs/zip2/blob/6f09b3064ec87c3a69ea9f3413f9f9638b4aa446/src/read/zipfile.rs#L243-L246) returns uncompressedsize verbatim from the central directory record. A ZIP64 extended-information extra field widens it to a full u64…
Assessment
- CVSS
- 7.5 (v3.1)
- Severity
- High
- EPSS
- 0.00461% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 26 October 2026
- Last updated
- 29 October 2026
- Affected
- rust · zip
- Weakness
- CWE-400, CWE-789
- Assigner
- security-advisories@github.com
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
At the source
References
- https://github.com/zip-rs/zip2/commit/a543a1fc8f3f3eef36f27bb137230295284cdb98
- https://github.com/zip-rs/zip2/pull/984
- https://github.com/zip-rs/zip2/releases/tag/v9.0.0
- https://github.com/zip-rs/zip2/security/advisories/GHSA-q7v9-x93c-xqv3
- https://nvd.nist.gov/vuln/detail/CVE-2026-115909
- https://github.com/advisories/GHSA-q7v9-x93c-xqv3
Community proofs of concept
No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.
Submit a proof of concept
Only for publicly disclosed vulnerabilities, and only material from testing you were authorised to perform. This platform does not buy, sell, or broker exploits — see earning from vulnerability research for legitimate bounty programs. Submissions are reviewed before they appear. Text only; do not include live credentials, personal data, or anything targeting systems you are not permitted to test.
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-115909