CVE-2026-65100

Summary

Apache Traffic Server updates the HTTP/2 HPACK dynamic table before confirming the header block encoded successfully, so an encode failure leaves the encoder out of sync with the peer decoder and corrupts subsequent header blocks on the connection.

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.

Affected Software

VendorProductVersion RangeStatus
Apache Software FoundationApache Traffic Server8.0.0 <= 8.1.9affected
Apache Software FoundationApache Traffic Server9.0.0 <= 9.2.14affected
Apache Software FoundationApache Traffic Server10.0.0 <= 10.1.3affected

Weaknesses

  • CWE-696: CWE-696 Incorrect Behavior Order

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References