Medium 6.3Published Mar 12, 2026

CVE-2026-32269Parse Server OAuth2 adapter app ID validation sends wrong token to introspection endpoint

Updated under an hour ago (Oct 26, 2026, 6:30 AM ET)

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It affects parse-community parse-server and 1 other product. Add what you run to find out whether that includes you.

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Exploited in the last 30 days

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.13 and 8.6.39, the OAuth2 authentication adapter does not correctly validate app IDs when appidField and appIds are configured. During app ID validation, a malformed value is sent to the token introspection endpoint instead of the user's actual access token. Depending on the introspection endpoint's behavior, this could either cause all OAuth2 logins to fail, or allow authentication from disallowed app contexts if the endpoint returns valid-looking data for the malformed request. Deployments using the OAuth2 adapter with appidField and appIds configured are affected. This vulnerability is fixed in 9.6.0-alpha.13 and 8.6.39.

CVSS: 6.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-683
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

parse-community parse-server parse_community:parse_server (from the name)	from 9.0.0, < 9.6.0-alpha.13; from 8.0.2, < 8.6.39	CNA record
parseplatform parse-server parseplatform:parse-server	from 8.0.2 before 8.6.39; from 9.0.0 before 9.6.0; 9.6.0; 9.6.0; 9.6.0; 9.6.0; 9.6.0; 9.6.0; and 6 more ranges	NVD

References

https://github.com/parse-community/parse-server/security/advisories/GHSA-69xg-f649-w5g2x-refsource-confirm, vendor-advisory
https://github.com/parse-community/parse-server/releases/tag/8.6.39x-refsource-misc, release-notes
https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.13x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.