CVE-2026-14895 — String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service
String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\s*$//u. …
Published: 2026-07-07 · CVSS: 7.5 · CVSS 3.1
String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of service. The trim and rtrim functions stripped trailing whitespace with s/\s*$//u. Because \s* matches greedily and the $ anchor fails whenever a non-whitespace character follows the whitespace, the regex engine retries the match at each offset of a long whitespace run, producing quadratic backtracking. The fix replaces \s*$ with \s+$. Any caller that passes untrusted input to trim or rtrim can trigger CPU exhaustion with a string containing a long run of whitespace.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7