CVE-2025-45143Public exploitNetwork attack vector

Application crash via backtracking equation validation

Published Jun 30, 2025 · Updated Jun 30, 2025

Regular expression denial of service in string-math 1.2.2 and earlier allows remote attackers to crash applications via crafted equations. The top-level validation loop repeatedly searches an untrusted equation with its line 7 regular expression, and long tab-prefixed input followed by repeated unmatched parentheses drives excessive backtracking. Reachability depends on a consuming application passing attacker-controlled strings to stringMath; exploitation exhausts CPU and eventually crashes that application.

CVSS severity3.7
Low
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular expression denial of service in string-math 1.2.2 and earlier allows remote attackers to crash applications via crafted equations. The top-level validation loop repeatedly searches an untrusted equation with its line 7 regular expression, and long tab-prefixed input followed by repeated unmatched parentheses drives excessive backtracking. Reachability depends on a consuming application passing attacker-controlled strings to stringMath; exploitation exhausts CPU and eventually crashes that application.

The record

CVE
CVE-2025-45143
Published
Jun 30, 2025
Updated
Jun 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1333, CAPEC-492, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.7GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
7.0CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1333Inefficient Regular Expression Complexity
CAPEC-492Regular Expression Exponential Blowup
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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