Buffer Overflow Vulnerability in Apache Traffic Server Multiplexer Plugin
CVE-2026-58187

6.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-58187?

The Apache Traffic Server multiplexer plugin is susceptible to a buffer overflow vulnerability when handling upstream input, which can result in a denial of service. This vulnerability affects various versions of the product and poses a risk to users. It is recommended that users upgrade to versions 9.2.15 or 10.1.4 to mitigate this issue.

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:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Omkhar Arasaratnam
.