Apache Traffic Server URL Mis-parsing Vulnerability
CVE-2026-58156

6.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-58156?

A mis-parsing issue in Apache Traffic Server compromises the proper handling of ports in URLs and userinfo fields. This flaw allows unauthorized access to resources due to improper access control mechanisms, leading to potential security risks for affected users. It is crucial for organizations utilizing versions 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3 to upgrade to the patched versions 9.2.15 or 10.1.4 to safeguard their systems.

Affected Version(s)

Apache Traffic Server 8.0.0 <= 8.1.9

Apache Traffic Server 9.0.0 <= 9.2.14

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:
Low
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
.