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CVE-2026-33930

MEDIUM
5.9
CVSS 3.1
Description
Apache Traffic Server copies the client Host header into a fixed-size stack buffer without a bound during redirect handling, so an over-long Host header overflows the stack when redirect following is enabled. 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.

Metadata

CVE ID
CVE-2026-33930
State
PUBLISHED
Assigner
apache
Reserved
2026-03-24 18:30 UTC
Published
2026-07-29 07:23 UTC
Last updated
2026-07-29 07:23 UTC
Primary CWE
CWE-121
CWE-121 Stack-based Buffer Overflow
Vendor / Product
Apache Software Foundation / Apache Traffic Server
Sources
cve.org  ·  NVD

Severity & Metrics

5.9 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
Apache Software Foundation Apache Traffic Server — 8.0.0 ≤ 8.1.9, 9.0.0 ≤ 9.2.14, 10.0.0 ≤ 10.1.3
Weakness (CWE)
CWESourceDescription
CWE-121 cna CWE-121 Stack-based Buffer Overflow
CVSS scores (2)
ScoreSeverityVersionSourceVector
8.2 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References (1)
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