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CVE

CVE-2026-30863

Parse Server: JWT audience validation bypass in Google, Apple, and Facebook authentication adapters
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CVE

CVE-2026-30863

Parse Server: JWT audience validation bypass in Google, Apple, and Facebook authentication adapters

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.10 and 9.5.0-alpha.11, the Google, Apple, and Facebook authentication adapters use JWT verification to validate identity tokens. When the adapter's audience configuration option is not set (clientId for Google/Apple, appIds for Facebook), JWT verification silently skips audience claim validation. This allows an attacker to use a validly signed JWT issued for a different application to authenticate as any user on the target Parse Server. This issue has been patched in versions 8.6.10 and 9.5.0-alpha.11.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30863.json, https://github.com/parse-community/parse-server/security/advisories/GHSA-x6fw-778m-wr9v, https://nvd.nist.gov/vuln/detail/CVE-2026-30863

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0.00034%
EPSS Percentile
0.1039%
Introduced Version
532a461d30a6ed4457839f2caf5f30d5abf51a55
Fix Available
59ec92142b27e1b016c0bc596295b14a78843444

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