CVE-2020-10770
MediumExploitedPublic exploitKeycloak vulnerable to Server-Side Request Forgery
Published May 24, 2022 · Updated Aug 7, 2026 · Also known as GHSA-jh7q-5mwf-qvhw
Key Facts
Patch immediately- CVE-2020-10770 is a medium-severity vulnerability (CVSS 5.3 v3.1) affecting Keycloak (Redhat), org.keycloak:keycloak-core (maven), rh-sso7-keycloak (redhat).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Dec 15, 2020. Public exploit code is available.
- EPSS estimates a 70% probability of exploitation in the next 30 days.
- Fixed versions are available, including Keycloak 12.0.2-1, Keycloak 12.0.2, org.keycloak:keycloak-core 13.0.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS (30-day exploit likelihood)
70%
Higher than 99.3% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jan 22, 2024 | n/a | Not reported |
| CIRCL KEV | Dec 15, 2020 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
7 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| KeycloakRedhat | >= keycloak 13.0.0 | 12.0.2 |
| org.keycloak:keycloak-coremaven | See advisory | 13.0.0 |
| rh-sso7-keycloakredhat | See advisory | 0:9.0.11-1.redhat_00001.1.el6sso |
Patched Releases
Keycloak
12.0.2-1, 12.0.2
org.keycloak:keycloak-core
13.0.0
rh-sso7-keycloak
0:9.0.11-1.redhat_00001.1.el6sso, 0:9.0.11-1.redhat_00001.1.el7sso, 0:9.0.11-1.redhat_00001.1.el8sso
Timeline
Added to CIRCL KEV
Dec 15, 2020
Publicly disclosed
May 24, 2022
Added to Industry KEV feed
Jan 22, 2024
Last updated
Aug 7, 2026
Weakness Type
- CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
- CWE-918 Server-Side Request Forgery (SSRF)
References
- advisoryRHSA-2021:0318
- advisoryRHSA-2021:0319
- advisoryRHSA-2021:0320
- advisoryRHSA-2021:0327
- advisoryhttps://bugzilla.redhat.com/show_bug.cgi?id=1846270
FAQ
Common Questions.
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.
Affected: Keycloak (Redhat) versions >= keycloak 13.0.0; org.keycloak:keycloak-core (maven); rh-sso7-keycloak (redhat). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Dec 15, 2020.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Keycloak 12.0.2-1, Keycloak 12.0.2, org.keycloak:keycloak-core 13.0.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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