zip-rs zip2 up to 8.x Extraction src/read/mod.rs ZipArchive::extract allocation of resources

Summaryinfo

A vulnerability, which was classified as problematic, has been found in zip-rs zip2 up to 8.x. This vulnerability affects the function ZipArchive::extract of the file src/read/mod.rs of the component Extraction. The manipulation leads to allocation of resources. This vulnerability is traded as CVE-2026-115909. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in zip-rs zip2 up to 8.x. This issue affects the function ZipArchive::extract of the file src/read/mod.rs of the component Extraction. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-115909 since 10/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 9.0.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-109987). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• zip-rs

Name

• zip2

Version

• 8.x

Website

• Product: https://github.com/zip-rs/zip2/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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