Dashboard / CVE-2026-124466

CVE-2026-124466

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 74/100
Published: 2026-11-08 Modified: 2026-11-10 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: Low
VI: Low
VA: None

Description

OpenEMR before 8.4.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server send HTTP requests by registering an OAuth2 client with an unvalidated jwks_uri. Attackers can trigger the fetch via the token introspection endpoint with an unsigned client_assertion to probe internal services and reach cloud metadata endpoints.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
openemr openemr 0 < 8.4.0
openemr openemr 0 < 8.4.0

References & Advisories (2)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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

EPSS — Exploitation Probability

0.21%
Raw Score 0.002080
Percentile 11.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00208
2026-11-12
0.00208
2026-11-10
0.00208
2026-11-09
0.00208

Intelligence Sources

mitre ref →
nvd ref →

External Links