Description
Valid Host header field can cause Apache Traffic Server to crash on some platforms.
This issue affects Apache Traffic Server: from 9.2.0 through 9.2.5.
Users are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does not have the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server | 9.2.0 – ≤ 9.2.5 | — |
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 12 | trafficserver | 9.2.5+ds-0+deb12u2 | DSA-5896-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | trafficserver | 9.2.5+ds-1ubuntu2.1 | USN-8050-1 |
| Ubuntu 24.04 LTS | trafficserver | 9.2.3+ds-1+deb12u1ubuntu0.1 | USN-8050-1 |
| Ubuntu 22.04 LTS | trafficserver | 9.1.1+ds-2ubuntu0.1 | USN-8050-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | trafficserver9 | 9.2.6-r0 | — |
| Alpine v3.23 | trafficserver9 | 9.2.6-r0 | — |
| Alpine v3.22 | trafficserver9 | 9.2.6-r0 | — |
| Alpine v3.21 | trafficserver9 | 9.2.6-r0 | — |
Advisories 3
- USN-8050-1 trafficserver vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5896-1 trafficserver - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2024-3466 Apache Traffic Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 18, 2026
References
- https://lists.apache.org/thread/y15fh6c7kyqvzm0f9odw7c5jh4r4np0y vendor-advisory