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CVE-2016-8609

21
FAUCET Score

CVE-2016-8609 describes an authentication flow bypass vulnerability in Red Hat Keycloak versions prior to 2.3.0. An attacker could craft a phishing URL to hijack a user's session, potentially leading to information disclosure or further attacks. This vulnerability has a CVSSv3 score of 8.1 (High), indicating a network-based attack with low complexity requiring user interaction, resulting in high confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3.0CPE matchmatch criteria
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.68%
Probability of exploitation in next 30 days
EPSS Percentile
74.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0168 is in the 74th percentile among its peer group of 14,875 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.keycloak:keycloak-coreFixed in: 2.3.0
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.0
View patch
redhatvendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

mavenGHSA-95m6-mjh3-58gmhigh

Improper Authentication in org.keycloak:keycloak-core

Oct 18, 2018
redhatCVE-2016-8609Moderate

keycloak: account hijacking via auth code fixation

Dec 13, 2016

References

rhn.redhat.com / errata/RHSA-2016-2945.html
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory
securityfocus.com / bid/95070
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037460
Third Party AdvisoryVDB Entry