CVE-2026-5958: Race Condition in GNU Sed

Overview

Severity

N/A

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-22

Last Updated

2026-09-05

EPSS Score

0.14% (percentile: 3.8%)

Affected Products (5)

Open Source Software

• cbl2 sed 4.8-3 on CBL Mariner 2.0
• azl3 sed 4.9-2 on Azure Linux 3.0
• azl3 sed 4.9-1 on Azure Linux 3.0

Other

• 21229-21692
• 21229

Security Updates (1)

• Security Update

Revision History

• 2026-04-22: Information published.
• 2026-04-24: Information published.
• 2026-04-29: Information published.
• 2026-08-09: Information published.
• 2026-09-05: Information published.