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NVD / CVE Program· CNA redhat

CVE-2020-35509: A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0.

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.36% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: org.keycloak:keycloak-core (Maven) 14.0.0; rh-sso7-keycloak (Red Hat:red_hat_single_sign_on:7::el6) 0:9.0.15-1.redhat_00002.1.el6sso; rh-sso7-keycloak-server (Red Hat:red_hat_single_sign_on:7::el6) 0:9.0.15-1.redhat_00002.1.el6sso.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to org.keycloak:keycloak-core (Maven) 14.0.0; rh-sso7-keycloak (Red Hat:red_hat_single_sign_on:7::el6) 0:9.0.15-1.redhat_00002.1.el6sso; rh-sso7-keycloak-server (Red Hat:red_hat_single_sign_on:7::el6) 0:9.0.15-1.redhat_00002.1.el6sso or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.

MediumCVSS 5.4 · v3.1—No exploit Fix available
Published
Aug 23, 2022
Updated
Jun 16, 2026
EPSS
0.3% · 30th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2020-35509

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatkeycloak

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redhat keycloak11.0.3
  • redhat keycloak12.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a keycloak

    • 11.0.3, 12.0.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenorg.keycloak:keycloak-corebefore 14.0.014.0.0
Red Hat:red_hat_single_sign_on:7::el6rh-sso7-keycloakbefore 0:9.0.15-1.redhat_00002.1.el6sso0:9.0.15-1.redhat_00002.1.el6sso
Red Hat:red_hat_single_sign_on:7::el6rh-sso7-keycloak-serverbefore 0:9.0.15-1.redhat_00002.1.el6sso0:9.0.15-1.redhat_00002.1.el6sso
Red Hat:red_hat_single_sign_on:7::el7rh-sso7-keycloakbefore 0:9.0.15-1.redhat_00002.1.el7sso0:9.0.15-1.redhat_00002.1.el7sso
Red Hat:red_hat_single_sign_on:7::el7rh-sso7-keycloak-serverbefore 0:9.0.15-1.redhat_00002.1.el7sso0:9.0.15-1.redhat_00002.1.el7sso
Red Hat:red_hat_single_sign_on:7::el8rh-sso7-keycloakbefore 0:9.0.15-1.redhat_00002.1.el8sso0:9.0.15-1.redhat_00002.1.el8sso
Red Hat:red_hat_single_sign_on:7::el8rh-sso7-keycloak-serverbefore 0:9.0.15-1.redhat_00002.1.el8sso0:9.0.15-1.redhat_00002.1.el8sso

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-10770A 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
    42Plan
  • CVE-2022-1245A privilege escalation flaw was found in the token exchange feature of keycloak.
    39Monitor
  • CVE-2019-14910A vulnerability was found in keycloak 7.x, when keycloak is configured with LDAP user federation and StartTLS is used instead of SSL/TLS fro
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2022-2668Aug 5, 2022 · An issue was discovered in Keycloak that allows arbitrary Javascript to be uploaded for the SAML protocol mapper even if the UPLOAD_SCRIPTS
    28Monitor
  • ← EarlierCVE-2021-3513Aug 22, 2022 · A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled.
    30Monitor
  • Later →CVE-2021-3827Aug 23, 2022 · A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed.
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:org.keycloak:keycloak-core14.0.0Package registry (OSV)
red hat:rh-sso7-keycloak0:9.0.15-1.redhat_00002.1.el6sso · Red Hat:red_hat_single_sign_on:7::el6Package registry (OSV)
red hat:rh-sso7-keycloak-server0:9.0.15-1.redhat_00002.1.el6sso · Red Hat:red_hat_single_sign_on:7::el6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records