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Vulnerability · Published Sep 24, 2026 · Assigned by mitre

CVE-2026-88385

Medium 6.5

In plain English

A medium-severity memory leak in the mxml package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 76.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

Mini-XML 4.0.5 contains a memory leak vulnerability in mxml_load_data() during malformed XML parsing. Specially crafted XML input can cause text nodes allocated by mxmlNewText() to become unlinked before a parse error transfers control to the cleanup path. These orphaned nodes are not released, resulting in a persistent memory leak on each parsing attempt. Repeated attacker-controlled requests can cause cumulative memory exhaustion and denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12mxmlno fix listedDEBIAN-CVE-2026-88385
Debian:13mxmlno fix listedDEBIAN-CVE-2026-88385
Debian:14mxml4.0.6-2DEBIAN-CVE-2026-88385
Ubuntu:22.04:LTSmxmlno fix listedUBUNTU-CVE-2026-88385
Ubuntu:24.04:LTSmxmlno fix listedUBUNTU-CVE-2026-88385
Ubuntu:26.04:LTSmxmlno fix listedUBUNTU-CVE-2026-88385
Ubuntu:26.10mxmlno fix listedUBUNTU-CVE-2026-88385

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References