How severe is CVE-2020-10770?

CVE-2020-10770 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-10770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10770?

CVE-2020-10770 affects Redhat Keycloak. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-10770?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-10770 published?

CVE-2020-10770 was published on 2020-12-15 and last updated on 2026-06-17.

CVE-2020-10770

CVE-2020-10770 is a medium-severity vulnerability in Redhat Keycloak with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 70% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-918.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 70% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Redhat Keycloak
Published: 2020-12-15
Last modified: 2026-06-17

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.

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.
How severe is CVE-2020-10770?: CVE-2020-10770 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-10770 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10770?: CVE-2020-10770 affects Redhat Keycloak. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-10770?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-10770 published?: CVE-2020-10770 was published on 2020-12-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*

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