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Public proof of conceptFix available

CVE-2026-88385

A public proof of concept exists; no exploitation attested.

  • Published2026-09-24
  • WeaknessCWE-401

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-09-2417:17CVE publishedNVD

Versions per branch

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • mxmlUbuntu:26.10all versions · no fixed version listed
  • mxmlUbuntu:26.04:LTSall versions · no fixed version listed
  • mxmlUbuntu:24.04:LTSall versions · no fixed version listed
  • mxmlUbuntu:22.04:LTSall versions · no fixed version listed
  • mxmlUbuntu:20.04:LTSall versions · no fixed version listed
  • mxmlUbuntu:18.04:LTSall versions · no fixed version listed
  • mxmlUbuntu:16.04:LTSall versions · no fixed version listed
  • mxmlDebian:14all versions · fixed in 4.0.6-2

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-88385 Red Hat Product Security

    mxml: mxml: Denial of Service via memory leak during malformed XML parsing

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2026-09-24
Last Modified
2026-10-06
NVD status
Deferred
GitHub Advisory
GHSA-2rm3-qp6x-wxfh

Frequently asked questions

What is CVE-2026-88385?

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.

Is CVE-2026-88385 actively exploited?

A proof-of-concept exploit exists for CVE-2026-88385, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-88385?

CVE-2026-88385 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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