CVE-2019-10157

lowpriority · track · 22OT risk · elevatedEPSS 0.002 · 11 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.21% (11th) EPSS

CVSS 2.1 · low

Is it mine?

8 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access indefinitely.

cvss

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

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.5

v2.02.1lowAV:L/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v3.05.5mediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.04.7mediumCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.04.7mediumCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 1 · impact 3.6

v3.05.5mediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.05.1mediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287USCWE-345USCWE-345US

affected products (8)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Single Sign On 7.3all versionscert_bundDEcpe:/a:redhat:single_sign_on:7.3
Red Hat KeyCloak≤ 4.8.3enisa_euvdEU
redhat keycloak< 4.8.3nvdUScpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
redhat single sign-on< 7.3.2nvdUScpe:2.3:a:redhat:single_sign-on:*:*:*:*:*:*:*:*
npm keycloak-connect< 4.8.3osvUSpkg:npm/keycloak-connect

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-1947Red Hat Single Sign On: Mehrere SchwachstellenDeutsch2019-06-11csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Red Hat Single Sign On ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, einen Denial of Service Zustand hervorzurufen, Informationen auszuspähen, Sicherheitsvorkehrungen zu umgehen oder beliebigen Programmcode auszuführen.
GHSA-68hw-vfh7-xvg8Forced Logout in keycloak-connect2019-06-13ghsa · osvUS
Versions of `keycloak-connect` prior to 4.4.0 are vulnerable to Forced Logout. The package fails to validate JWT signatures on the `/k_logout` route, allowing attackers to logout users and craft malicious JWTs with NBF values that prevent user access indefinitely. ## Recommendation Upgrade to version 4.4.0 or later.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2019-06-12modified 2026-06-17

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+7709 more

references (13)

External citations — patches, advisories, analysis.

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