CVE-2026-33930 — Apache Traffic Server: Buffer overflow via Host field that has a long string value

CVE-2026-33930

Apache Traffic Server: Buffer overflow via Host field that has a long string value PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Traffic Server	affected 8.0.0 through 8.1.11; affected 9.0.0 through 9.2.14; affected 10.0.0 through 10.1.3

CWE

CWE-121

References

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.