Bug ID 915689: HTTP/2 dynamic header table may fail to identify indexed headers on the response side.

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
13.1.3,,,,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 16.0.0,

Fixed In:
16.1.0, 16.0.1, 15.1.1,,

Opened: Jun 10, 2020

Severity: 3-Major


Some HTTP/2 response headers may be added to the dynamic header table even if this header is already stored in the table. Instead of subsequent responses using the correct dynamic header table index, these headers may be continually seen as being incrementally indexed.


Select HTTP/2 response headers may fail to use the dynamic header table index. These headers are incrementally indexed on subsequent responses instead of using the existing table index.


-- HTTP/2 clientside profile. -- Concurrent HTTP/2 responses contain headers.



Fix Information

HTTP/2 response headers now properly use the dynamic header table index when possible.

Behavior Change

Guides & references

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