CVE-2026-6019: BaseCookie.js_output() does not neutralize embedded characters

Overview

Severity

N/A

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-29

Last Updated

2026-10-21

EPSS Score

0.21% (percentile: 11.2%)

Affected Products (9)

Open Source Software

• cbl2 python3 3.9.19-19 on CBL Mariner 2.0
• azl3 python3 3.12.9-10 on Azure Linux 3.0

Other

• 21379-17084
• 21492-17084
• 21694-17084
• 21811-17084
• 20937-21692
• 21897-17084
• 21639-17084

Security Updates (1)

• Security Update

Revision History

• 2026-04-29: Information published.
• 2026-04-30: Information published.
• 2026-06-03: Information published.
• 2026-06-28: Information published.
• 2026-08-10: Information published.
• 2026-09-09: Information published.
• 2026-09-20: Information published.
• 2026-09-23: Information published.
• 2026-09-24: Information published.
• 2026-09-25: Information published.
• 2026-10-21: Information published.