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Medium severity5.9NVD Advisory· Published Jul 29, 2026· Updated Oct 1, 2026

CVE-2026-33930

CVE-2026-33930

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 8.1.11, 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.

Affected products

2
  • Apache/trafficserverllm-fuzzy2 versions
    8.0.0 - 8.1.11, 9.0.0 - 9.2.14, 10.0.0 - 10.1.3+ 1 more
    • (no CPE)range: 8.0.0 - 8.1.11, 9.0.0 - 9.2.14, 10.0.0 - 10.1.3
    • cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*range: >=8.0.0,<=8.1.9

Patches

Vulnerability mechanics

References

1

News mentions

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