CVE-2026-115909

zip: Unbounded Symlink-Target Handling Can Abort Or Exhaust Memory During Extraction

zip is a zip library for Rust that supports reading and writing simple ZIP files. From 1.3.0 until 9.0.0, ZipArchive::extract in src/read/mod.rs calls Vec::with_capacity for a symbolic link target using the attacker-controlled ZIP64 uncompressed_size before reading entry data. A small archive can request an impossible capacity, causing the infallible allocation path to abort the process before the entry is validated. The failure cannot be contained with catch_unwind or a worker thread, allowing repeated denial of service in archive-processing applications. This issue is fixed in version 9.0.0.

Affected

zip-rs · zip2

CVSS v3.1 GITHUB

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.46% chance of exploitation in the next 30 days, 40th percentile

Published

2026-10-26

Proof-of-concept exploits (1)

• advisories/GHSA-q7v9-x93c-xqv3find archive

CVE references

• zip-rs/zip2/commit/a543a1fc8f3f3eef36f27bb137230295284cdb98REFERENCE
• zip-rs/zip2/pull/984REFERENCE
• zip-rs/zip2/releases/tag/v9.0.0REFERENCE
• zip-rs/zip2/security/advisories/GHSA-q7v9-x93c-xqv3REFERENCE

References

• CVE Record
• NVD entry