Apache Traffic Server Redirect-Limit Bypass Vulnerability
CVE-2026-58189

8.2HIGH

Key Information:

Vendor

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

What is CVE-2026-58189?

The vulnerability in Apache Traffic Server occurs when plugins improperly reset the retry counter, leading to a bypass of the redirect limit. This flaw can be exploited for SSRF amplification attacks, posing significant risks to network security. It is crucial for users operating affected versions to upgrade to the fixed releases (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:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Omkhar Arasaratnam
.