Description
Improper Input Validation vulnerability in Apache Traffic Server.
This issue affects Apache Traffic Server: from 9.2.0 through 9.2.14, from 10.1.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server | 9.2.0 – ≤ 9.2.14, 10.1.0 – ≤ 10.1.3 | — |
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 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | trafficserver | No fix yet | — |
| Ubuntu 18.04 LTS | trafficserver | No fix yet | — |
| Ubuntu 16.04 LTS | trafficserver | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | trafficserver | No fix yet | — |
| Ubuntu Pro 20.04 LTS | trafficserver | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
Boreas37/CVE-2026-33267-PoC ★ 4 · Aug 12, 2026
CVE-2026-33267 — Apache Traffic Server @ header internal-metadata spoof (CVSS 10.0). Verified: @ headers leak to plugins on 10.1.2, stripped on 10.1.4
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2026-2561 Apache Traffic Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 29, 2026
References
- https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d vendor-advisory