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Not in CISA KEV
LOW severity

CVE-2025-45143 — string-math

LOW

CVE-2025-45143 is a low-severity (CVSS 3.7) CWE-1333 vulnerability in string-math. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

string-math's string-math.js vulnerability can cause Regex Denial of Service (ReDoS)

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-45143.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs37th percentile — riskier than 37% of all scored CVEsHighest risk
0.00%0.31%0.62%0.93%0.3%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

11other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
string-mathnpm
4Kdownloads / week

Description

string-math v1.2.2 was discovered to contain a Regex Denial of Service (ReDoS) which is exploited via a crafted input.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmstring-mathall versionsNo fix

Affected Products

1 product · 1 configurations
Application
string-mathdevrafalko
1 version
1.2.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for string-math, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of string-math for CVE-2025-45143. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

string-math v1.2.2 was discovered to contain a Regex Denial of Service (ReDoS) which is exploited via a crafted input.
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CVE-2025-45143: string-math DoS (Low 3.7)