What’s Vulnerable › Vulnerabilities

CVE-2018-25079: Segmentio is-url index.js redos

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-04 · updated 2026-06-17
• Weakness: CWE-1333

Description

A vulnerability was found in Segmentio is-url up to 1.2.2. It has been rated as problematic. Affected by this issue is some unknown functionality of the file index.js. The manipulation leads to inefficient regular expression complexity. The attack may be launched remotely. Upgrading to version 1.2.3 is able to address this issue. The patch is identified as 149550935c63a98c11f27f694a7c4a9479e53794. It is recommended to upgrade the affected component. VDB-220058 is the identifier assigned to this vulnerability.

Affected products

• Segmentio is-url: through 1.2.2
• Npm Is-Url: before 1.2.3 — fixed in 1.2.3

How to fix

Upgrade to a fixed version: Npm Is-Url 1.2.3. Check the vendor advisory for mitigations.

References

• https://github.com/segmentio/is-url/commit/149550935c63a98c11f27f694a7c4a9479e53794
• https://github.com/segmentio/is-url/pull/18
• https://github.com/segmentio/is-url/releases/tag/v1.2.3
• https://vuldb.com/?ctiid.220058
• https://vuldb.com/?id.220058
• https://github.com/segmentio/is-url/commit/149550935c63a98c11f27f694a7c4a9479e53794
• https://github.com/segmentio/is-url/pull/18
• https://github.com/segmentio/is-url/releases/tag/v1.2.3
• https://vuldb.com/?ctiid.220058
• https://vuldb.com/?id.220058

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