CVE-2026-30967 details an authentication bypass vulnerability affecting Parse Server versions prior to 9.5.2-alpha.9 and 8.6.22. The flaw occurs when the OAuth2 authentication adapter is configured without the useridField option, allowing an attacker with any valid OAuth2 token from the same provider to authenticate as any other user. This vulnerability carries a CVSSv3 score of 8.8 (High) due to its network attack vector and low complexity, enabling high impact on confidentiality, integrity, and availability. Currently, there is no indication of active exploitation, public exploit code, or significant community discussion surrounding this issue.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 8.6.22CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | ||
>= 9.0.0, < 9.5.2CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | ||
9.5.2CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:* | ||
9.5.2CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:* | ||
9.5.2CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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
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