Parse Server missing audience validation in Keycloak authentication adapter
Impact
The Keycloak authentication adapter does not validate the azp (authorized party) claim of Keycloak access tokens against the configured client-id. A valid access token issued by the same Keycloak realm for a different client application can be used to authenticate as any user on the Parse Server that uses the Keycloak adapter. This enables cross-application account takeover in multi-client Keycloak realms.
All Parse Server deployments that use the Keycloak authentication adapter with a Keycloak realm that has multiple client applications are affected.
Patches
The fix replaces the userinfo HTTP call with local JWT verification and enforces azp claim validation against the configured client-id.
Workarounds
None.
References
- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v
- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5
- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.18
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | parse-server | >= 9.0.0, < 9.5.2-alpha.5, < 8.6.18 | 9.5.2-alpha.5, 8.6.18 |
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v
- https://nvd.nist.gov/vuln/detail/CVE-2026-30949
- https://github.com/parse-community/parse-server
- https://github.com/parse-community/parse-server/releases/tag/8.6.18
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-287- Platform
- npm
- Package
parse-server- Disclosed
- 11.03.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-48mh-j4p5-7j9v - CC BY 4.0
Vulnerability history: parse-server
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 116
- First → latest
- 06.2019 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 17
- High 49
- Medium 40
- Low 10
Disclosures per year
- 2019: 2
- 2020: 4
- 2021: 4
- 2022: 12
- 2023: 5
- 2024: 4
- 2025: 6
- 2026: 79
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Parse Server missing audience validation in Keycloak authentication adapter this entry
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