#VU108924 Improper Check for Unusual or Exceptional Conditions in http-proxy-middleware - CVE-2025-32997

Vulnerability identifier: #VU108924

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-32997

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
http-proxy-middleware
Web applications / JS libraries

Vendor: Steven Chim

Description

The vulnerability allows a remote attacker to modify data on the system.

The vulnerability exists due to improper error handling. A remote attacker can send specially crafted data to the application and modify data on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

http-proxy-middleware: 0.0.5, 0.1.0, 0.2.0, 0.3.0, 0.3.1, 0.3.2, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 0.8.1, 0.8.2, 0.9.0, 0.9.1, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.14.0, 0.15.0, 0.15.1, 0.15.2, 0.16.0, 0.17.0, 0.17.1, 0.17.2, 0.17.3, 0.17.4, 0.18.0, 0.19.0, 0.19.1, 0.19.2, 0.20.0, 0.21.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.1.0, 1.1.1, 1.1.2, 1.2.0, 1.2.1, 1.3.0, 1.3.1, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4

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External links
https://github.com/chimurai/http-proxy-middleware/commit/1bdccbeec243850f1d2bb50ea0ff2151e725d67e
https://github.com/chimurai/http-proxy-middleware/pull/1096
https://github.com/chimurai/http-proxy-middleware/releases/tag/v2.0.9
https://github.com/chimurai/http-proxy-middleware/releases/tag/v3.0.5

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.