CVE-2026-58158CWE-121

CVE-2026-58158

Medium · published July 29, 2026

CVSS v3.1
5.9
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

Apache Traffic Server mishandles PROXY protocol input, truncating ports and overflowing the stack.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00584 · 47.2th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-07-29T14:16Z
Affected products (3)
ProductVersionsFixed in
apache/traffic_server≥ 8.0.0, ≤ 8.1.9—
apache/traffic_server≥ 9.0.0, < 9.2.159.2.15
apache/traffic_server≥ 10.0.0, < 10.1.410.1.4
References (1)
https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d · [email protected]
EPSS history
Timeline
  • 29 JUL 08:26Z
    Apache Traffic Server: PROXY protocol parsing has port truncation and a stack overflow
    cvelistv5