CVE-2026-33267CWE-20

CVE-2026-33267

Critical · published July 29, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
48.2
In the wild
Unconfirmed
What it is

Improper Input Validation vulnerability in Apache Traffic Server.

This issue affects Apache Traffic Server: from 9.2.0 through 9.2.14, from 10.1.0 through 10.1.3.

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00603 · 48.2th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-07-29T12:16Z
Affected products (2)
ProductVersionsFixed in
apache/traffic_server≥ 9.2.0, < 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 07:21Z
    Apache Traffic Server: Untrusted @ headers can spoof ATS internal metadata
    cvelistv5