CVE-2020-35509

mediumpriority · track · 22EPSS 0.004 · 29 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.35% (29th) EPSS

CVSS 5.4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.5

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondaryexploitability 2.8 · impact 2.5

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · OSV

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-295USprimaryCWE-20USCWE-20USCWE-295US

affected products (4)

Products and version ranges known to be affected.

n/a KeyCloak≤ 11.0.3, 12.0.0enisa_euvdEU
redhat keycloak= 11.0.3nvdUScpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
redhat keycloak= 12.0.0nvdUScpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
Maven org.keycloak:keycloak-core< 14.0.0osvUSpkg:maven/org.keycloak/keycloak-core

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-rpj2-w6fr-79hcKeycloak vulnerable to Improper Certificate Validation2022-08-24ghsa · osvUS
keycloak accepts an expired certificate by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity. This issue was partially fixed in version [13.0.1](https://github.com/keycloak/keycloak/pull/6330) and more completely fixed in version [14.0.0](https://github.com/keycloak/keycloak/pull/8067).

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2022-08-23modified 2026-06-17

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+1889 more

references (8)

External citations — patches, advisories, analysis.

scry

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