What’s Vulnerable › Vulnerabilities

CVE-2017-20162: vercel ms index.js parse redos

• Severity: medium (CVSS 5.3 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: yes
• Published: 2023-01-05 · updated 2026-10-15
• Weakness: CWE-1333

Description

A vulnerability, which was classified as problematic, has been found in vercel ms up to 1.x. This issue affects the function parse of the file index.js. The manipulation of the argument str leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.0.0 is able to address this issue. The patch is named caae2988ba2a37765d055c4eee63d383320ee662. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217451.

Affected products

• vercel ms: before 2.0.0 — fixed in 2.0.0

How to fix

Upgrade to a fixed version: vercel ms 2.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/vercel/ms/commit/caae2988ba2a37765d055c4eee63d383320ee662
• https://github.com/vercel/ms/pull/89
• https://github.com/vercel/ms/releases/tag/2.0.0
• https://vuldb.com/?ctiid.217451
• https://vuldb.com/?id.217451
• https://github.com/vercel/ms/commit/caae2988ba2a37765d055c4eee63d383320ee662
• https://github.com/vercel/ms/pull/89
• https://github.com/vercel/ms/releases/tag/2.0.0
• https://security.netapp.com/advisory/ntap-20241108-0002/
• https://vuldb.com/?ctiid.217451
• https://vuldb.com/?id.217451

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