Bug ID 2358921: Large JWTs causes tmm core while encoding

Last Modified: Jul 08, 2026

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

Known Affected Versions:
17.5.1.6

Opened: Jun 29, 2026

Severity: 2-Critical

Symptoms

When JWTs with an encoded length greater than 2MB are processed by TMM for OAuth, it causes TMM to crash

Impact

The TMM crashes, causing the BIG-IP to become unavailable

Conditions

JWT configured with large claims or scope - increasing the overall payload size

Workaround

Reduce JWT payload length by modifying the claims or scopes

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips