CVE-2021-23362: Regular Expression Denial of Service (ReDoS)

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-03-23 · updated 2026-06-17
Weakness: CWE-1333

Description

The package hosted-git-info before 3.0.8 are vulnerable to Regular Expression Denial of Service (ReDoS) via regular expression shortcutMatch in the fromUrl function in index.js. The affected regular expression exhibits polynomial worst-case time complexity.

Affected products

Npmjs Hosted-Git-Info: from 2.0.0 before 2.8.9; from 3.0.0 before 3.0.8 — fixed in 2.8.9, 3.0.8
Siemens Sinec Infrastructure Network Services: before 1.0.1.1 — fixed in 1.0.1.1
Npm Hosted-Git-Info: before 2.8.9; from 3.0.0 before 3.0.8 — fixed in 2.8.9, 3.0.8

How to fix

Upgrade to a fixed version: Npmjs Hosted-Git-Info 2.8.9, 3.0.8; Siemens Sinec Infrastructure Network Services 1.0.1.1; Npm Hosted-Git-Info 2.8.9, 3.0.8. Check the vendor advisory for mitigations.

References

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