HTTP/2 Trailers Improper Handling in Apache Traffic Server
CVE-2026-58153

6.3MEDIUM

Key Information:

Vendor

Apache
Status
Apache Traffic Server
Vendor
CVE Published:
29 July 2026

What is CVE-2026-58153?

A vulnerability in Apache Traffic Server allows for improper handling of HTTP/2 origin trailers when converting requests to HTTP/1. This flaw can result in unexpected behavior or security concerns as HTTP/2 trailers are forwarded without the required chunked framing, potentially leading to data corruption or miscommunication with clients. Users are advised to upgrade to version 9.2.15 or 10.1.4 to mitigate this vulnerability and enhance their server's security.

Affected Version(s)

Apache Traffic Server 10.0.0 <= 10.1.3

References

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnoky...
vendor-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Apache Community
Omkhar Arasaratnam
.