Description
A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability affects the function InsertNodeAsParent of the file src/parser.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. 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 | — |
References
- VDB-313612 | HTACG tidy-html5 parser.c InsertNodeAsParent null pointer dereference vdb-entry technical-description
- VDB-313612 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #601007 | htacg tidy-html5 tidy-html5 5.8.0 (commit d08ddc2) NULL Pointer Dereference third-party-advisory
- https://github.com/htacg/tidy-html5/issues/1141 issue-tracking
- https://github.com/user-attachments/files/19652942/tidy-html5_crash.txt exploit