CVE Explorer
CVE-2026-43930
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,
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"parse-server","vendor":"parse-community","versions":[{"status":"affected","version":">= 9.0.0, < 9.9.0-alpha.2"},{"status":"affected","version":"< 8.6.76"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:d23eb7db9bc69c3a367e747153cd6269b1b5dfd3b0c01d3140fc9da93abb9241 · sha256:464aacc08ddf0e6b… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":2.1,"baseSeverity":"LOW","privilegesRequired":"HIGH","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d23eb7db9bc69c3a367e747153cd6269b1b5dfd3b0c01d3140fc9da93abb9241 · sha256:464aacc08ddf0e6b… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d23eb7db9bc69c3a367e747153cd6269b1b5dfd3b0c01d3140fc9da93abb9241 · sha256:464aacc08ddf0e6b… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/parse-community/parse-server/pull/10448","tags":["x_refsource_MISC"],"url":"https://github.com/parse-community/parse-server/pull/10448"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d23eb7db9bc69c3a367e747153cd6269b1b5dfd3b0c01d3140fc9da93abb9241 · sha256:464aacc08ddf0e6b… · /containers/cna/references/1
{"name":"https://github.com/parse-community/parse-server/pull/10449","tags":["x_refsource_MISC"],"url":"https://github.com/parse-community/parse-server/pull/10449"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d23eb7db9bc69c3a367e747153cd6269b1b5dfd3b0c01d3140fc9da93abb9241 · sha256:464aacc08ddf0e6b… · /containers/cna/references/2
{"name":"https://github.com/parse-community/parse-server/security/advisories/GHSA-jpq4-7fmq-q5fj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-jpq4-7fmq-q5fj"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d23eb7db9bc69c3a367e747153cd6269b1b5dfd3b0c01d3140fc9da93abb9241 · sha256:464aacc08ddf0e6b… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.