Use-After-Free and Time-of-Check Errors in Apache Traffic Server
CVE-2026-58164

8.3HIGH

Key Information:

Vendor

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

What is CVE-2026-58164?

The Apache Traffic Server is susceptible to a combination of use-after-free and time-of-check/time-of-use errors that arise during remap configuration management. This vulnerability can lead to unpredictable behavior and potential system compromise. Affected versions range from 8.0.0 to 8.1.9, 9.0.0 to 9.2.14, and 10.0.0 to 10.1.3. Users are urged to upgrade to versions 9.2.15 or 10.1.4 to mitigate these risks.

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:
8.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
High
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
.