Description
A security vulnerability has been detected in michaelrsweet mxml 4.0.5/4.0.6. This affects the function mxml_load_data of the file mxml-file.c. The manipulation leads to use after free. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| michaelrsweet | mxml | 4.0.5, 4.0.6 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mxml | 4.0.6-3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mxml | No fix yet | — |
| Ubuntu 26.04 LTS | mxml | No fix yet | — |
| Ubuntu 24.04 LTS | mxml | No fix yet | — |
| Ubuntu 22.04 LTS | mxml | No fix yet | — |
| Ubuntu 20.04 LTS | mxml | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mxml | No fix yet | — |
| Ubuntu 16.04 LTS | mxml | No fix yet | — |
References
- VDB-421908 | michaelrsweet mxml mxml-file.c mxml_load_data use after free vdb-entry technical-description
- VDB-421908 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-112094 | CVE Analysis and Report third-party-advisory
- Submit #1011796 | mxml v4.0.5, v4.0.6 Use After Free third-party-advisory
- https://github.com/michaelrsweet/mxml/issues/358 issue-tracking
- https://github.com/user-attachments/files/32836547/mxml-fix-354-358.patch patch
- https://github.com/user-attachments/files/32701825/poc_mxml_error_handling.tar.gz exploit
- https://github.com/michaelrsweet/mxml/ product