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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-115909
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-26 17:17:18 UTC
Updated2026-10-26 20:17:51 UTC
Descriptionzip 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

Problem Types: CWE-400 | CWE-789 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-789 CWE-789: Memory Allocation with Excessive Size Value

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zip-rs Zip2 affected >= 1.3.0, < 9.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/zip-rs/zip2/pull/984 [email protected] github.com
github.com/zip-rs/zip2/security/advisories/GHSA-q7v9-x93c-xqv3 [email protected] github.com
github.com/zip-rs/zip2/commit/a543a1fc8f3f3eef36f27bb137230295284cdb98 [email protected] github.com
github.com/zip-rs/zip2/releases/tag/v9.0.0 [email protected] github.com
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