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MEDIUM

CVE-2020-10770

CVSS v3

5.3

MEDIUM

EPSS Score

69.7 %

exploit probability, as of 2026-10-18

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • org.keycloak:keycloak-coreMavenall versions · fixed in 13.0.0

Vendor advisories

  • CVE-2020-10770 Red Hat Product Security10 products fixed

    keycloak: Default Client configuration is vulnerable to SSRF using "request_uri" parameter

  • RHSA-2021:0327 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.4.5 security update

  • RHSA-2021:0319 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.4.5 security update on RHEL 7

  • RHSA-2021:0320 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.4.5 security update on RHEL 8

  • RHSA-2021:0318 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Single Sign-On 7.4.5 security update on RHEL 6

Full record on NVD

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.

Technical details

Published
2020-12-15
Exploit-DB
EDB-50405

Frequently asked questions

What is CVE-2020-10770?

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.

Is CVE-2020-10770 actively exploited?

Active exploitation of CVE-2020-10770 has not been confirmed. Its EPSS score was 69.7% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-10770?

CVE-2020-10770 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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