🛡️ CVE-2017-20162 — ms

⚪ Unknown ✅ No Known Exploit CWE-1333 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Vercel ms Inefficient Regular Expression Complexity vulnerability

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 name of the patch is caae2988ba2a37765d055c4eee63d383320ee662. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217451.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

Weakness class

CVE-2017-20162 is classified as CWE-1333: Inefficient Regular Expression Complexity. A regular expression backtracks catastrophically on crafted input, consuming CPU out of proportion to input size.

Affected software

CVE-2017-20162 is recorded against 1 package.

  • ms

Timeline and source

Published on 5 January 2023 and last revised on 4 November 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
security.netapp.com (Web)
vuldb.com (Web)
vuldb.com (Web)

CVE-2017-20162 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-1333
Public Exploit ✅ No
Source OSV
Published 2023-01-05
Updated 2026-08-12
Modified 2025-11-04
Fix URL N/A

Affected Packages

Software From version Fixed in
ms — —

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