Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck

CVE-2026-85609Openpanel before 2.3.0 SSRF via Site Checker Endpoint

High 7.5

In plain English

A high-severity server-side request forgery in openpanel from Openpanel-dev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 57.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Openpanel before 2.3.0 contains an unauthenticated full-read server-side request forgery (SSRF) vulnerability in the GET /tools/site-checker endpoint (apps/api/src/controllers/tools.controller.ts). The endpoint passes a user-supplied url query parameter to fetchWithRedirects() and performs server-side HTTP requests to arbitrary URLs without any SSRF/IP validation. An unauthenticated remote attacker can access cloud instance metadata endpoints, probe internal services, scan internal network ports, and read returned content (status code, page size, timing, and parsed HTML metadata), and leak internal IP addresses (via getIPInfo() to a third party).

Affected products (as reported)

Vendor	Product	Versions
Openpanel-dev	openpanel	0 – before 2.3.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-r3jv-rmrg-j395) vendor-advisory
VulnCheck Advisory: Openpanel before 2.3.0 SSRF via Site Checker Endpoint third-party-advisory