CVE-2023-25166: Regular Expression Denial of Service (ReDoS) Vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-02-08 · updated 2026-10-28
Weakness: CWE-1333

Description

formula is a math and string formula parser. In versions prior to 3.0.1 crafted user-provided strings to formula's parser might lead to polynomial execution time and a denial of service. Users should upgrade to 3.0.1+. There are no known workarounds for this vulnerability.

Affected products

hapijs formula: before 3.0.1 — fixed in 3.0.1

How to fix

Upgrade to a fixed version: hapijs formula 3.0.1. Check the vendor advisory for mitigations.

References

https://github.com/hapijs/formula/commit/9fbc20a02d75ae809c37a610a57802cd1b41b3fe
https://github.com/hapijs/formula/security/advisories/GHSA-c2jc-4fpr-4vhg
https://github.com/hapijs/formula/commit/9fbc20a02d75ae809c37a610a57802cd1b41b3fe
https://github.com/hapijs/formula/security/advisories/GHSA-c2jc-4fpr-4vhg

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