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CVE-2019-10157

18
FAUCET Score

CVE-2019-10157 describes a vulnerability in Keycloak's Node.js adapter, versions prior to 4.8.3, and affects Red Hat Keycloak and Red Hat Single Sign-On. The flaw allows a local attacker to craft a malicious web token with a specific NBF parameter, potentially leading to an indefinite denial of service for users. Rated Medium severity with a CVSS score of 5.5, this vulnerability requires local access and has a high impact on availability, though confidentiality and integrity are not affected. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.8.3CPE matchmatch criteria
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
< 7.3.2CPE matchmatch criteria
cpe:2.3:a:redhat:single_sign-on:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.7MEDIUM

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
11.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 51st percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

npmpatch availablevia ghsa
Product: keycloak-connectFixed in: 4.8.3
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.3.2 zip
View patch
redhatvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Single Sign-On 7Fixed in: rh-sso7-keycloak

Vendor Advisories (2)

npmGHSA-68hw-vfh7-xvg8medium

Forced Logout in keycloak-connect

Jun 13, 2019
redhatCVE-2019-10157Low

keycloak: Node.js adapter internal NBF can be manipulated leading to DoS.

Jun 11, 2019

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory
securityfocus.com / bid/108734
Third Party AdvisoryVDB Entry