What is CVE-2026-115907?

CVE-2026-115907 is a high-severity vulnerability in Zip-Rs Zip2, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-10-26.

How severe is CVE-2026-115907?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Zip-Rs Zip2

CVE-2026-115907

zip is a zip library for Rust that supports reading and writing simple ZIP files. From 5.1.0 until 9.0.0, applications built with the legacy-zip feature can reserve output capacity from an attacker-controlled ZIP64 uncompressed size before validating the compressed stream. The ShrinkDecoder path in src/legacy/shrink.rs can panic with a capacity overflow during ZipArchive::extract, and the Reduce and Implode decoders contain the same unbounded preallocation pattern. An unhandled panic can terminate an archive-processing service. This issue is fixed in version 9.0.0.

Vulnerability class: DoS (Denial of Service)

Published 2026-10-26 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Zip-Rs Zip2 — versions >= 5.1.0, < 9.0.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-115907?: CVE-2026-115907 is a high-severity vulnerability in Zip-Rs Zip2, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-10-26.
How severe is CVE-2026-115907?: High severity. CVSS v3 base score is 7.5 out of 10.