CVE-2024-39935 — jc21 NGINX Proxy Manager before 2

jc21 NGINX Proxy Manager before 2.11.3 allows backend/internal/certificate.js OS command injection by an authenticated user (with certificate management privileges) via untrusted input to the DNS provider configuration. NOTE: this is not part of any NGINX software shipped by F5.

01What is this vulnerability?

jc21 NGINX Proxy Manager before 2.11.3 allows backend/internal/certificate.js OS command injection by an authenticated user (with certificate management privileges) via untrusted input to the DNS provider configuration. NOTE: this is not part of any NGINX software shipped by F5.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-07-04T00:00:00.000Z
• Last modified: 2024-08-21T14:16:18.439Z

09References

• github.com — https://github.com/NginxProxyManager/nginx-proxy-manager/commit/99cce7e2b0da2978…
• github.com — https://github.com/NginxProxyManager/nginx-proxy-manager/compare/v2.11.2...v2.11…
• github.com — https://github.com/NginxProxyManager/nginx-proxy-manager/issues/3662