Paper/Archive/CVE-2026-33267

CVE-2026-33267

Apache Software Foundation Apache Traffic Server — Apache Traffic Server: Untrusted @ headers can spoof ATS internal metadata

EPSS 0.6%CVSS 10.0

critical.is priorityof 100

CVSS 10.0 (CNA)10.0 / 10 × 3030.0 Not in CISA KEV+300.0 EPSS percentile 48.7.487 × 209.7 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

Apache Traffic Server9.2.0 – 9.2.14–CNA

Apache Traffic Server10.1.0 – 10.1.3–CNA

Scores by source

apache (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

apache (CNA)7.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d