CVE-2025-5891

Unitech pm2 Config.js redos

5.3 MediumFix available

A vulnerability classified as problematic was found in Unitech pm2 up to 6.0.6. This vulnerability affects unknown code of the file /lib/tools/Config.js. The manipulation leads to inefficient regular expression complexity. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.70%Up 0.7 points since Jun 10, 2025

What each source reports

CVE List Score used 5.3

Unitech pm2 Config.js redos

Record: CVE-2025-5891
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:T/RC:R
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:T/RC:R
CVSS 2.0: 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:TF/RC:UR
Weakness: CWE-1333, CWE-400
Updated: 2026-11-02

EUVDEUVD-2025-17577 5.3

Record: EUVD-2025-17577
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Updated: 2026-11-02

GitHub AdvisoriesGHSA-x5gf-qvw8-r2rm 2.1

pm2 Regular Expression Denial of Service vulnerability

A vulnerability classified as problematic was found in Unitech pm2 prior to 7.0.0. This vulnerability affects unknown code of the file /lib/tools/Config.js. The manipulation leads to inefficient regular expression complexity. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Record: GHSA-x5gf-qvw8-r2rm
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-400, CWE-1333
Updated: 2026-11-02

NVD 2.1

Record: CVE-2025-5891
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness: CWE-400, CWE-1333
Updated: 2026-11-02

OSV 2.1

Unitech pm2 Config.js redos

Record: CVE-2025-5891
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weakness: CWE-1333, CWE-400
Updated: 2026-11-02

OSVGHSA-x5gf-qvw8-r2rm 2.1

pm2 Regular Expression Denial of Service vulnerability

Record: GHSA-x5gf-qvw8-r2rm
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-1333, CWE-400
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`pm2` npm	before 7.0.0	7.0.0

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-5891 is a medium vulnerability (CVSS 5.3) in Keymetric Pm2, published June 9, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. Fixed in pm2 7.0.0.

References

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