CVE-2026-15534: Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch

Overview

Severity

Medium (CVSS 5.7)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-11

Last Updated

2026-09-10

EPSS Score

0.26% (percentile: 15.3%)

Affected Products (2)

Other

• 21697-17084
• 21848-17084

Security Updates (1)

• Security Update

Revision History

• 2026-08-11: Information published.
• 2026-08-13: Information published.
• 2026-09-09: Information published.
• 2026-09-10: Information published.