CVE-2020-10770

Name: CVE-2020-10770
Creator: NVD / NIST
Published: 2020-12-15T20:15:14.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 69.72%

Last modified Jun 17, 2026

CVE-2020-10770 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter request_uri. This flaw allows an attacker to use this parameter to execute a Server-side request forgery (SSRF) attack.. EPSS estimates a 69.72% chance of exploitation in the next 30 days.

Description

A flaw was found in Keycloak before 13.0.0, where it is possible to force the server to call out an unverified URL using the OIDC parameter request_uri. This flaw allows an attacker to use this parameter to execute a Server-side request forgery (SSRF) attack.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

69.72%

99.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Keycloak	< 12.0.2

References

http://packetstormsecurity.com/files/164499/Keycloak-12.0.1-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1846270Issue Tracking, Vendor Advisory
http://packetstormsecurity.com/files/164499/Keycloak-12.0.1-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1846270Issue Tracking, Vendor Advisory

Timeline

Published: Dec 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10770?

How severe is CVE-2020-10770?

CVE-2020-10770 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 69.72% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10770?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10770?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST