CVE-2026-43930
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.76 and 9.9.0-alpha.2, a race condition in the MFA SMS one-time password (OTP) login path allows two concurrent /login requests carrying the same OTP to both succeed and both receive valid session tokens, breaking the single-use property of the OTP. The vulnerability requires the attacker to already possess the victim's password and intercept the active SMS OTP (e.g. via SIM swap, network mirror, or phishing relay) and to race the legitimate login request, so the practical attack surface is narrow. This vulnerability is fixed in 8.6.76 and 9.9.0-alpha.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.9.0-alpha.2 | 9.9.0-alpha.2 |
parse-servernpm | < 8.6.76 | 8.6.76 |
Affected products
5- Range: < 8.6.76
cpe:2.3:a:parseplatform:parse-server:9.9.0:alpha1:*:*:*:node.js:*:*+ 1 more
- cpe:2.3:a:parseplatform:parse-server:9.9.0:alpha1:*:*:*:node.js:*:*
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*range: <8.6.76
- osv-coords2 versions
< 8.6.76+ 1 more
- (no CPE)range: < 8.6.76
- (no CPE)range: >= 9.0.0, < 9.9.0-alpha.2
Patches
Vulnerability mechanics
References
5- github.com/parse-community/parse-server/pull/10448nvdIssue TrackingPatchWEB
- github.com/parse-community/parse-server/pull/10449nvdIssue TrackingPatchWEB
- github.com/advisories/GHSA-jpq4-7fmq-q5fjghsaADVISORY
- github.com/parse-community/parse-server/security/advisories/GHSA-jpq4-7fmq-q5fjnvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-43930ghsaADVISORY
News mentions
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