CVE-2026-14895

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/scottchiefbaker/String-Util/commit/f8150867aaeb8f57c59601aefb2193f2caed8745.patch
https://github.com/scottchiefbaker/String-Util/releases
https://metacpan.org/release/BAKERSCOT/String-Util-1.36/diff/BAKERSCOT/String-Util-1.35#lib/String/Util.pm
http://www.openwall.com/lists/oss-security/2026/07/07/18

Configurations

No configuration.

History

08 Jul 2026, 15:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

08 Jul 2026, 01:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/07/07/18 -

07 Jul 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-07 23:16

Updated : 2026-07-08 15:56

NVD link : CVE-2026-14895

Mitre link : CVE-2026-14895

CVE.ORG link : CVE-2026-14895

JSON object : View

Products Affected

No product.

CWE

CWE-1333

Inefficient Regular Expression Complexity

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