Buffer overflow in Mxml
CVE-2026-5037
A vulnerability was determined in mxml up to 4.0.4. This issue affects the function index_sort of the file mxml-index.c of the component mxmlIndexNew. Executing a manipulation of the argument tempr can lead to stack-based buffer overflow. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 6e27354466092a1ac65601e01ce6708710bb9fa5. A patch should be applied to remediate this issue.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Mxml — versions 4.0.0, 4.0.1, 4.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/353963 (technical-description, vdb-entry)
- vuldb.com/vuln/353963/cti (signature, permissions-required)
- vuldb.com/submit/778638 (third-party-advisory)
- github.com/michaelrsweet/mxml/issues/350 (issue-tracking)
- github.com/michaelrsweet/mxml/issues/350 (issue-tracking)
- github.com/user-attachments/files/25934383/1.xml (exploit)
- github.com/michaelrsweet/mxml/commit/6e27354466092a1ac65601e01ce6708710bb9fa5 (patch)
Frequently asked questions
- What is CVE-2026-5037?
- CVE-2026-5037 is a low-severity vulnerability in Mxml, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-03-29.
- How severe is CVE-2026-5037?
- Low severity. CVSS v3 base score is 3.3 out of 10.