BugZero | F5 BugID 592868 - Rewrite may crash processing HTML tag with HTML en...

F5 - Defect ID: 592868

Rewrite may crash processing HTML tag with HTML entity in attribute value

F5 - Defect ID: 592868

Rewrite may crash processing HTML tag with HTML entity in attribute value

Last updated on July 18th, 2026

BugZero Risk Score
8.4 High

Overall: 8.4

Severity: 9.1

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 2-Critical
Status: Verified
Impact Category: Access Policy Manager

Description

Symptoms

If HTML page contains HTML entities in attribute values, rewrite may crash processing this page.

Impact

Web application may not work correctly.

Conditions

HTML tag like this: <script src="
" type="text/javascript"></script>

Workaround

In most cases HTML entities can be replaced by appropriate characters by iRule.

Fix Information

Now rewrite correctly handles HTML entities in attribute values.

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions:11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4, 12.1.0, 12.1.0 hf1, 12.1.0 hf2, 12.1.1, 12.1.1 hf1, 12.1.1 hf2

Fixed versions: 13.0.0, 12.1.2

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 13.0.0, 12.1.2

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F5 - Defect ID: 592868

Rewrite may crash processing HTML tag with HTML entity in attribute value

F5 - Defect ID: 592868

Rewrite may crash processing HTML tag with HTML entity in attribute value

Last updated on July 18th, 2026

BugZero Risk Score8.4 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 592868

Rewrite may crash processing HTML tag with HTML entity in attribute value

F5 - Defect ID: 592868

Rewrite may crash processing HTML tag with HTML entity in attribute value

Last updated on July 18th, 2026

BugZero Risk Score8.4 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
8.4 High

BugZero Risk Score
8.4 High