CVE-2019-10157: It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token receiv

Q: How do I fix CVE-2019-10157?

keycloak: upgrade to 4.8.3; single sign-on: upgrade to 7.3.2. Exact commands for each OS are on this page.

Q: Is CVE-2019-10157 being exploited?

CVE-2019-10157 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-10157 affect?

CVE-2019-10157 affects keycloak, single sign-on. Severity is medium (CVSS 4.7). 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 set

Q: How urgent is CVE-2019-10157?

Priority 24/100. On your watchlist

Routine

MEDIUM 4.7WATCHLISTUPGRADEUPGRADE

CVE-2019-10157 is a medium-severity flaw (CVSS 4.7) affecting keycloak, single sign-on. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-345, CWE-287
Published	2019-06-12
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-12 14:29 UTCPublished CVE record published
2026-06-17 02:10 UTCUpdated Record last modified

redhat keycloak UPGRADE

Affected: < 4.8.3

Fixed in: 4.8.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy keycloak || rpm -q keycloak || keycloak --version

2. UPGRADE to 4.8.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade keycloak

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade keycloak

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

redhat single sign-on UPGRADE

Affected: < 7.3.2

Fixed in: 7.3.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy single-sign-on || rpm -q single-sign-on || single-sign-on --version

2. UPGRADE to 7.3.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade single-sign-on

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade single-sign-on

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-10157?

keycloak: upgrade to 4.8.3; single sign-on: upgrade to 7.3.2. Exact commands for each OS are on this page.

Is CVE-2019-10157 being exploited?

CVE-2019-10157 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-10157 affect?

CVE-2019-10157 affects keycloak, single sign-on. Severity is medium (CVSS 4.7). 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 set

How urgent is CVE-2019-10157?

Priority 24/100. On your watchlist

Software pages

Node.js vulnerabilities · Keycloak vulnerabilities

Related CVEs

CVE-2023-6927 MEDIUM 4.6 MITIGATE DOWNGRADE A flaw was found in Keycloak
CVE-2023-6563 HIGH 7.7 UPGRADE DOWNGRADE An unconstrained memory consumption vulnerability was discovered in Keycloak
CVE-2023-6291 HIGH 7.1 UPGRADE DOWNGRADE A flaw was found in the redirect_uri validation logic in Keycloak
CVE-2023-6134 MEDIUM 4.6 UPGRADE UPGRADE A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is app
CVE-2025-8419 MEDIUM 5.3 MITIGATE A vulnerability was found in Keycloak-services

References

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