Low severity3.7NVD Advisory· Published Apr 7, 2026· Updated Apr 15, 2026
CVE-2026-39321
CVE-2026-39321
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.6 and 8.6.74, he login endpoint response time differs measurably depending on whether the submitted username or email exists in the database. When a user is not found, the server responds immediately. When a user exists but the password is wrong, a bcrypt comparison runs first, adding significant latency. This timing difference allows an unauthenticated attacker to enumerate valid usernames. This vulnerability is fixed in 9.8.0-alpha.6 and 8.6.74.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.8.0-alpha.6 | 9.8.0-alpha.6 |
parse-servernpm | < 8.6.74 | 8.6.74 |
Affected products
6cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha1:*:*:*:node.js:*:*+ 5 more
- cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha1:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha2:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha3:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha4:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:9.8.0:alpha5:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*range: <8.6.74
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- github.com/parse-community/parse-server/pull/10398nvdIssue TrackingPatchWEB
- github.com/parse-community/parse-server/pull/10399nvdIssue TrackingPatchWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-mmpq-5hcv-hf2vnvdMitigationPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-mmpq-5hcv-hf2vghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-39321ghsaADVISORY
News mentions
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