Description
A vulnerability classified as problematic has been found in HTACG tidy-html5 5.8.0. Affected is the function defaultAlloc of the file src/alloc.c. The manipulation leads to memory leak. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HTACG | tidy-html5 | 5.8.0 | — |
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 | tidy-html5 | No fix yet | — |
| Debian 13 | tidy-html5 | No fix yet | — |
| Debian 12 | tidy-html5 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | tidy-html5 | No fix yet | — |
| Ubuntu 26.04 LTS | tidy-html5 | No fix yet | — |
| Ubuntu 25.10 | tidy-html5 | No fix yet | — |
| Ubuntu 24.04 LTS | tidy-html5 | No fix yet | — |
| Ubuntu 22.04 LTS | tidy-html5 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | tidy-html5 | No fix yet | — |
| Ubuntu 18.04 LTS | tidy-html5 | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | tidy | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | tidy | No fix yet | — |
References
- VDB-313614 | HTACG tidy-html5 alloc.c defaultAlloc memory leak vdb-entry technical-description
- VDB-313614 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #601009 | htacg tidy-html5 tidy-html5 5.8.0 (commit d08ddc2) Memory Leak third-party-advisory
- https://github.com/htacg/tidy-html5/issues/1152 issue-tracking
- https://github.com/user-attachments/files/20438303/tidy-html5_crash_3.txt exploit