CVE-2022-3916
Keycloak: session takeover with oidc offline refreshtokens
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Keycloak: session takeover with oidc offline refreshtokens
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.
- Record
CVE-2022-3916- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-384
- Updated
- 2026-11-02
EUVDEUVD-2022-7575
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.
- Record
EUVD-2022-7575- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-97g8-xfvw-q4hg
Keycloak vulnerable to session takeover with OIDC offline refreshtokens
An issue was discovered in Keycloak when using a client with the offline_access scope. Reuse of session ids across root and user authentication sessions and a lack of root session validation enabled attackers to resolve a user session attached to a different previously authenticated user.
This issue most affects users of shared computers. Suppose a user logs out of their account (without clearing their cookies) in a mobile app or similar client that includes the offline_access scope, and another user authenticates to the application. In that case, it will share the same root session id, and when utilizing the refresh token, they will be issued a token for the original user.
- Record
GHSA-97g8-xfvw-q4hg- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287, CWE-304, CWE-488, CWE-613
- Updated
- 2026-11-02
NVD
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.
- Record
CVE-2022-3916- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-384, CWE-613
- Updated
- 2026-11-02
OSV
Keycloak: session takeover with oidc offline refreshtokens
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.
- Record
CVE-2022-3916- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-384
- Updated
- 2026-11-02
OSVGHSA-97g8-xfvw-q4hg
Keycloak vulnerable to session takeover with OIDC offline refreshtokens
An issue was discovered in Keycloak when using a client with the offline_access scope. Reuse of session ids across root and user authentication sessions and a lack of root session validation enabled attackers to resolve a user session attached to a different previously authenticated user.
This issue most affects users of shared computers. Suppose a user logs out of their account (without clearing their cookies) in a mobile app or similar client that includes the offline_access scope, and another user authenticates to the application. In that case, it will share the same root session id, and when utilizing the refresh token, they will be issued a token for the original user.
- Record
GHSA-97g8-xfvw-q4hg- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287, CWE-304, CWE-488, CWE-613
- Updated
- 2026-11-02
Show 6 moreShow less
OSVRHSA-2022:8961
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.1 security update on RHEL 7
- Record
RHSA-2022:8961- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVRHSA-2022:8962
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.1 security update on RHEL 8
- Record
RHSA-2022:8962- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVRHSA-2022:8963
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.1 security update on RHEL 9
- Record
RHSA-2022:8963- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
OSVRHSA-2023:1043
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 7
- Record
RHSA-2023:1043- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRHSA-2023:1044
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 8
- Record
RHSA-2023:1044- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVRHSA-2023:1045
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.2 security update on RHEL 9
- Record
RHSA-2023:1045- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
- redhat keycloak
- redhat openshift container platform
- redhat openshift container platform for linuxone
- redhat openshift container platform for power
- redhat openshift container platform ibm z systems
- redhat single sign-on
- red hat single sign-on 7
- red hat single sign-on 7.6 for rhel 7
- red hat single sign-on 7.6 for rhel 8
- red hat single sign-on 7.6 for rhel 9
- red hat single sign-on 7.6.1
- red hat rhel-8 based middleware containers
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.keycloak:keycloak-parentMaven |
through 19.0.2 | 20.0.2 |
org.keycloak:keycloak-parentMaven |
before 20.0.2, plus listed versions 1.0-alpha-11.0-alpha-1-120620131.0-alpha-21.0-alpha-31.0-alpha-4 Show 45 moreShow less1.0-beta-11.0-beta-1-201505211.0-beta-1-201505231.0-beta-21.0-beta-31.0-beta-41.0-final1.0-rc-11.0-rc-21.0.1.Final1.0.2.Final1.0.3.Final1.0.4.Final1.0.5.Final1.1.0.Beta11.1.0.Beta21.1.0.Final1.1.1.Final1.2.0.Beta11.2.0.CR11.2.0.Final1.3.0.Final1.3.1.Final1.4.0.Final1.5.0-Final1.5.0.Final1.5.1.Final1.6.0.Final1.6.1.Final1.7.0.CR11.7.0.Final1.8.0.Alpha11.8.0.CR11.8.0.CR21.8.0.CR31.8.0.Final1.8.1.Final1.9.0.CR11.9.0.Final1.9.1.Final1.9.2.Final1.9.3.Final1.9.4.Final1.9.5.Final1.9.7.Final |
20.0.2 |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7.6::el7 From an advisory covering 2 CVEs |
before 0:18.0.3-1.redhat_00002.1.el7sso | 0:18.0.3-1.redhat_00002.1.el7sso |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7.6::el7 From an advisory covering 2 CVEs |
before 0:18.0.3-1.redhat_00002.1.el7sso | 0:18.0.3-1.redhat_00002.1.el7sso |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7.6::el8 From an advisory covering 2 CVEs |
before 0:18.0.3-1.redhat_00002.1.el8sso | 0:18.0.3-1.redhat_00002.1.el8sso |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7.6::el8 From an advisory covering 2 CVEs |
before 0:18.0.3-1.redhat_00002.1.el8sso | 0:18.0.3-1.redhat_00002.1.el8sso |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7.6::el9 From an advisory covering 2 CVEs |
before 0:18.0.3-1.redhat_00002.1.el9sso | 0:18.0.3-1.redhat_00002.1.el9sso |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7.6::el9 From an advisory covering 2 CVEs |
before 0:18.0.3-1.redhat_00002.1.el9sso | 0:18.0.3-1.redhat_00002.1.el9sso |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7.6::el7 From an advisory covering 31 CVEs |
before 0:18.0.6-1.redhat_00001.1.el7sso | 0:18.0.6-1.redhat_00001.1.el7sso |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7.6::el7 From an advisory covering 31 CVEs |
before 0:18.0.6-1.redhat_00001.1.el7sso | 0:18.0.6-1.redhat_00001.1.el7sso |
Show 4 moreShow less
| Package | Affected | Fixed |
|---|---|---|
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7.6::el8 From an advisory covering 31 CVEs |
before 0:18.0.6-1.redhat_00001.1.el8sso | 0:18.0.6-1.redhat_00001.1.el8sso |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7.6::el8 From an advisory covering 31 CVEs |
before 0:18.0.6-1.redhat_00001.1.el8sso | 0:18.0.6-1.redhat_00001.1.el8sso |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7.6::el9 From an advisory covering 31 CVEs |
before 0:18.0.6-1.redhat_00001.1.el9sso | 0:18.0.6-1.redhat_00001.1.el9sso |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7.6::el9 From an advisory covering 31 CVEs |
before 0:18.0.6-1.redhat_00001.1.el9sso | 0:18.0.6-1.redhat_00001.1.el9sso |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-3916 is a medium vulnerability (CVSS 6.8) in Redhat Keycloak, published December 13, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.95%, the 61st percentile. Fixed in org.keycloak:keycloak-parent 20.0.2.
References
access.redhat.com/errata/RHSA-2022:8961
Show 166 moreShow less
bugzilla.redhat.com/show_bug.cgi?id=2141404
github.com/keycloak/keycloak/security/advisories/GHSA-97g8-xfvw-q4hg
nvd.nist.gov/vuln/detail/CVE-2022-3916
catalog.redhat.com/software/containers
issues.redhat.com/browse/CIAM-4414
security.access.redhat.com/data/csaf/v2/advisories/2022/rhsa-2022_8961.json
cve.org/CVERecord?id=CVE-2022-3782
blog.jquery.com/2019/04/10/jquery-3-4-0-released
drupal.org/sa-core-2019-006
cisa.gov/known-exploited-vulnerabilities-catalog
security.snyk.io/vuln/SNYK-JS-GLOBPARENT-1314294
bitbucket.org/snakeyaml/snakeyaml/issues/525
mail-archive.com/[email protected]/msg39312.html
lists.apache.org/thread/pdzo1qgyplf4y523tnnzrcm7hoco3l8c
cxf.apache.org/security-advisories.data/CVE-2022-46364.txt?version=1&modificationDate=1670944472739&api=v2
Left out here: 94 versions. The JSON record has them.