CVE-2026-33409 is a critical authentication bypass vulnerability in Parse Server, affecting versions prior to 8.6.52 and 9.6.0-alpha.41 when the `allowExpiredAuthDataToken` option is enabled. This flaw allows an unauthenticated attacker to gain full access to any user's account linked to a third-party provider by merely knowing their provider ID, bypassing credential requirements. With a CVSS score of 9.1 (Critical), it presents a low-complexity network attack vector with high impacts on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 8.6.52CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | ||
>= 9.0.0, < 9.6.0CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | ||
9.6.0CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha1:*:*:*:node.js:*:* | ||
9.6.0CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha10:*:*:*:node.js:*:* | ||
9.6.0CPE matchmatch criteria | cpe:2.3:a:parseplatform:parse-server:9.6.0:alpha11:*:*:*:node.js:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/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
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.