CVE-2026-5037
CVE-2026-5037 is a low-severity vulnerability with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- CVSS v2: 1.7
- CVSS v4: 1.9
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-16983
- Weakness: CWE-119
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-5037?
- CVE-2026-5037 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2026-5037 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-5037?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-5037 have an EU (EUVD) identifier?
- Yes. CVE-2026-5037 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16983.
- When was CVE-2026-5037 published?
- CVE-2026-5037 was published on 2026-03-29 and last updated on 2026-06-17.
References
- https://github.com/michaelrsweet/mxml/commit/6e27354466092a1ac65601e01ce6708710bb9fa5
- https://github.com/michaelrsweet/mxml/issues/350
- https://github.com/michaelrsweet/mxml/issues/350#issuecomment-4051317229
- https://github.com/user-attachments/files/25934383/1.xml
- https://vuldb.com/submit/778638
- https://vuldb.com/vuln/353963
- https://vuldb.com/vuln/353963/cti
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