BugZero | F5 BugID 1100561 - AAA: a trailing ampersand is added to serverside r...

F5 - Defect ID: 1100561

AAA: a trailing ampersand is added to serverside request when using HTTP forms based auth

F5 - Defect ID: 1100561

AAA: a trailing ampersand is added to serverside request when using HTTP forms based auth

Last updated on July 18th, 2026

BugZero Risk Score
6.0 Medium

Overall: 6.0

Severity: 6.4

Community: 4.2

Lifecycle: 8.3

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Bug Details

Priority: 4-Minor
Status: Verified
Impact Category: Access Policy Manager

Description

Symptoms

An extra "&" is added to a request

Impact

The server replies with an error due to the extra trailing & in the request from APM

Conditions

A query is specified in a Form-Action field

Workaround

None

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6

Fixed versions: 17.5.0, 17.1.1, 16.1.5, 15.1.10.8

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 17.5.0, 17.1.1, 16.1.5, 15.1.10.8

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F5 - Defect ID: 1100561

AAA: a trailing ampersand is added to serverside request when using HTTP forms based auth

F5 - Defect ID: 1100561

AAA: a trailing ampersand is added to serverside request when using HTTP forms based auth

Last updated on July 18th, 2026

BugZero Risk Score6.0 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 1100561

AAA: a trailing ampersand is added to serverside request when using HTTP forms based auth

F5 - Defect ID: 1100561

AAA: a trailing ampersand is added to serverside request when using HTTP forms based auth

Last updated on July 18th, 2026

BugZero Risk Score6.0 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.0 Medium

BugZero Risk Score
6.0 Medium