SSRF in Mitreid Connect
CVE-2021-26715
The OpenID Connect server implementation for MITREid Connect through 1.3.3 contains a Server Side Request Forgery (SSRF) vulnerability. The vulnerability arises due to unsafe usage of the logo_uri parameter in the Dynamic Client Registration request. An unauthenticated attacker can make a HTTP request from the vulnerable server to any address in the internal network and obtain its response (which might, for example, have a JavaScript payload for resultant XSS). The issue can be exploited to bypass network boundaries, obtain sensitive data, or attack other hosts in the internal network.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/releases (Third Party Advisory)
- portswigger.net/research/hidden-oauth-attack-vectors (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-26715?
- CVE-2021-26715 is a critical-severity vulnerability in Mitreid Connect, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.1/10. Published 2021-03-25.
- How severe is CVE-2021-26715?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2021-26715 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.