High severity · published Oct 26, 2026
CVE-2026-115909
zip: Unbounded Symlink-Target Handling Can Abort Or Exhaust Memory During Extraction
New
7.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZI
zip2 · zip-rs
>= 1.3.0, < 9.0.0 · source: vendor
Affected product
ZI
zip2
zip-rs
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CVE-2026-115907
zip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed size
7.4
CVE-2026-115908
zip: Arbitrary file write outside the extraction directory, because ZipArchive::extract validates symlink targets lexically. (The defense against CVE-2025-29787 was broken in v7.2.0)
6.5
CVE-2026-115906
zip: AES Entry HMAC Authentication Bypass on Premature EOF