Vulnerability in Apache Software Foundation Traffic Server
CVE-2026-58150
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. …
Vulnerability class: HTTP Request Smuggling
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Apache Software Foundation Traffic Server — versions 8.0.0, 9.0.0, 10.0.0
Weakness classification (CWE)
References
- security@apache.org (vendor-advisory)
Frequently asked questions
- What is CVE-2026-58150?
- CVE-2026-58150 is a critical-severity vulnerability in Apache Software Foundation Traffic Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 10.0/10. Published 2026-07-29.
- How severe is CVE-2026-58150?
- Critical severity. CVSS v3 base score is 10.0 out of 10.