What is CVE-2026-58152?

CVE-2026-58152 is a medium-severity vulnerability in Apache Traffic Server, classified under Integer Overflow or Wraparound. CVSS score: 5.9/10. Published 2026-07-29.

How severe is CVE-2026-58152?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Integer overflow in Apache Traffic Server

CVE-2026-58152

Apache Traffic Server mishandles integers while decoding HPACK/XPACK headers, corrupting memory. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Vulnerability class: Integer Overflow

EPSS: 0.003 (27.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Traffic_server
Apache Software Foundation Traffic Server — versions 8.0.0, 9.0.0, 10.0.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2026-58152?: CVE-2026-58152 is a medium-severity vulnerability in Apache Traffic Server, classified under Integer Overflow or Wraparound. CVSS score: 5.9/10. Published 2026-07-29.
How severe is CVE-2026-58152?: Medium severity. CVSS v3 base score is 5.9 out of 10.