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

EPSS Score

0.20% (percentile: 9.5%)

Affected Products (1)

Other

• 21697-17084

Revision History

• 2026-08-11: Information published.