PT-2026-56275 · Cpan · String::Util

Scott Baker · Published 2026-07-07 · Updated 2026-07-08 · CVE-2026-14895

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions String::Util versions prior to 1.36

Description String::Util for Perl is susceptible to a regular expression denial of service. The trim() and rtrim() functions use a regular expression to strip trailing whitespace. Because the s* pattern matches greedily and the $ anchor fails when a non-whitespace character follows the whitespace, the regex engine performs quadratic backtracking on long whitespace runs. An attacker providing untrusted input containing a long sequence of whitespace to these functions can cause CPU exhaustion.

Recommendations Update String::Util to version 1.36 or later. As a temporary workaround, restrict the use of the trim() and rtrim() functions when processing untrusted input.

DoS

Weakness Enumeration

CWE-1333

Related Identifiers

CVE-2026-14895

Affected Products

String::Util

References · 7

• https://github.com/scottchiefbaker/String-Util/commit/f8150867aaeb8f57c59601aefb2193f2caed8745.patch · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-14895 · Security Note
• https://github.com/scottchiefbaker/String-Util/releases · Note
• http://openwall.com/lists/oss-security/2026/07/07/18 · Note
• https://twitter.com/CVEnew/status/2074643362091774461 · Twitter Post
• https://metacpan.org/release/BAKERSCOT/String-Util-1.36/diff/BAKERSCOT/String-Util-1.35#lib/String/Util.pm · Note
• https://twitter.com/infoflowcloud/status/2074645010478231892 · Twitter Post