Description
LibHTP is a security-aware parser for the HTTP protocol. Crafted traffic can cause excessive processing time of HTTP headers, leading to denial of service. This issue is addressed in 0.5.46.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OISF | libhtp | < 0.5.46 | — |
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 13 | libhtp | 1:0.5.46-1 | — |
| Debian 12 | libhtp | 1:0.5.42-1+deb12u1 | — |
| Debian 11 | libhtp | 1:0.5.36-1+deb11u1 | DLA-4295-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | libhtp | 1:0.5.46-1ubuntu2+esm1 | USN-7814-1 |
| Ubuntu Pro 22.04 LTS | libhtp | 1:0.5.39-1ubuntu0.1~esm1 | USN-7814-1 |
| Ubuntu Pro 20.04 LTS | libhtp | 1:0.5.32-1ubuntu0.1~esm1 | USN-7814-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | libhtp | 1:0.5.26-1ubuntu0.1~esm1 | USN-7814-1 |
| Ubuntu Pro 16.04 LTS | libhtp | 0.5.15-1ubuntu0.1~esm1 | USN-7814-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP6 | libhtp | 0.5.42-bp156.3.3.1 | openSUSE-SU-2024:0150-2, openSUSE-SU-2024:0150-1 |
| SUSE Package Hub 15 SP5 | libhtp | 0.5.42-bp156.3.3.1 | openSUSE-SU-2024:0150-2, openSUSE-SU-2024:0150-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libhtp | 0.5.46-1.1 | openSUSE-SU-2024:13706-1 |
| openSUSE Leap 15.6 | libhtp | 0.5.42-bp156.3.3.1 | openSUSE-SU-2024:0150-2, openSUSE-SU-2024:0150-1 |
| openSUSE Leap 15.5 | libhtp | 0.5.42-bp156.3.3.1 | openSUSE-SU-2024:0150-2, openSUSE-SU-2024:0150-1 |
Advisories 5
- USN-7814-1 libhtp vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-4295-1 libhtp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:13706-1 libhtp-devel-0.5.46-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:0150-1 Security update for libhtp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:0150-2 Security update for libhtp SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/OISF/libhtp/security/advisories/GHSA-f9wf-rrjj-qx8m
- https://github.com/OISF/libhtp/commit/20ac301d801cdf01b3f021cca08a22a87f477c4a
- https://redmine.openinfosecfoundation.org/issues/6444
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GOCOBFUTIFHOP2PZOH4ENRFXRBHIRKK4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXJIT7R53ZXROO3I256RFUWTIW4ECK6P/