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Vulnerability · Published Oct 26, 2026 · Assigned by GitHub_M

CVE-2026-115909zip: Unbounded Symlink-Target Handling Can Abort Or Exhaust Memory During Extraction

High 7.5

In plain English

A high-severity uncontrolled resource consumption in zip2 from zip-rs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12rust-zipno fix listedDEBIAN-CVE-2026-115909
Debian:13rust-zipno fix listedDEBIAN-CVE-2026-115909
Debian:14rust-zipno fix listedDEBIAN-CVE-2026-115909
Ubuntu:26.04:LTSrust-zipno fix listedUBUNTU-CVE-2026-115909
Ubuntu:26.10rust-zipno fix listedUBUNTU-CVE-2026-115909

Affected products (as reported)

VendorProductVersions
zip-rs zip2 >= 1.3.0, < 9.0.0

Weakness: CWE-400, CWE-789 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References