Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Oz_Ayd_69699's avatar
Oz_Ayd_69699
Icon for Nimbostratus rankNimbostratus
Jul 27, 2006

iRule error - http_process_state_parse_header - Invalid state transition to ST_HTTP_XFER_HEADERS

hi,     When I have two iRules (an authenticate rule and an another rule), the following error is displaying     011f0008 http_process_state_parse_header - Invalid state transition to ST_...
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bl0ndie_127134's avatar
bl0ndie_127134
Historic F5 Account
Jul 28, 2006
Your rule probably has some illegal sequence of events that the F5-TCL checker did not catch. What does the offending rule look like?