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. 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.

Published: 2026-07-07 Last update: 2026-07-08 Assigner: 9b29abf9-4ab0-4765-b253-1875cd9b441e Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-14895 is rated Moderate Risk (41.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.39%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-14895

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-07-09 0.19% 0.39% +0.20%
2 2026-07-08 — 0.19% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-14895

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-14895

GitHub Security Advisory for CVE-2026-14895

GHSA-vm32-9cff-wgh2 · Severity: high — String::Util versions before 1.36 for Perl are susceptible to a regular expression denial of...

OS Trackers for CVE-2026-14895

vendor priority summary link
debian not yet assigned CVE-2026-14895 not yet assigned priority: Debian including 1 source packages (libstring-util-perl), 4 status rows across 4 suites (bookworm, forky, sid, trixie): open 2, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-14895
ubuntu medium CVE-2026-14895 medium priority: Ubuntu including 1 source packages (libstring-util-perl), 5 status rows across 5 suites (jammy, noble, questing, resolute, upstream): needs-triage 2, DNE 1, ignored 1, released 1. https://ubuntu.com/security/CVE-2026-14895

Affected software / configurations for CVE-2026-14895

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-14895

cvelogic Threat Intelligence