CVE-2026-5037

mxml mxmlIndexNew mxml-index.c index_sort stack-based overflow

State: Published
Severity: 4.8 Medium
Published: Mar 29, 2026
Updated: Apr 1, 2026
Reserved: Mar 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	3.3 Low	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
3.0	3.3 Low	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
2.0	1.7 Low	AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-121 Stack-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
mxmln/a	4.0.0Affected 4.0.1Affected 4.0.2Affected 4.0.3Affected 4.0.4Affected

References

VDB-353963 | mxml mxmlIndexNew mxml-index.c index_sort stack-based overflowvdb-entrytechnical-description
VDB-353963 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #778638 | michaelrsweet mxml 4.0.4 Heap-based Buffer Overflowthird-party-advisory
https://github.com/michaelrsweet/mxml/issues/350issue-tracking
https://github.com/michaelrsweet/mxml/issues/350#issuecomment-4051317229issue-tracking
https://github.com/user-attachments/files/25934383/1.xmlexploit
https://github.com/michaelrsweet/mxml/commit/6e27354466092a1ac65601e01ce6708710bb9fa5patch

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