CVE-2026-111810CWE-400denial-of-service

CVE-2026-111810

High · published October 22, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
17.1
In the wild
Unconfirmed
What it is

Apache Traffic Server 9.2.15, 10.1.4 and 10.2.0 write one unthrottled diagnostic log line for every internal @ header they strip, so a request carrying many such headers makes the proxy write far more log data than the request contains.

This issue affects Apache Traffic Server: 9.2.15, 10.1.4, 10.2.0.

Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00263 · 17.1th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-10-22T00:17Z
References (1)
https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc · [email protected]
EPSS history
Timeline
  • 23 OCT 03:55Z
    EPSS moved — → 0%
    epss
  • 21 OCT 19:14Z
    Apache Traffic Server: Unthrottled per-header diagnostic logging enables a log-flood denial of service
    cvelistv5
  • 21 OCT 19:14Z
    Apache Traffic Server: Unthrottled per-header diagnostic logging enables a log-flood denial of service
    cvelistv5