CVE-2026-121413
Low
Description
Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 contains an authorization bypass in the session upgrade endpoint, which creates a new session for any valid session token without enforcing the _Session class create class-level permission. Attackers holding a user's session token can send an already revocable token to /upgradeToRevocableSession to obtain additional sessions with fresh expiration that persist after the original session is logged out.
SeverityLow
CVSS3.1
Exploit probability—
ProductParse-community Parse-server
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- parse-community parse-server9.10.6-alpha.4, 8.6.112 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| parse-community parse-server | 9.0.0 ≤ v < 9.10.6-alpha.4, v < 8.6.112 | 9.10.6-alpha.4, 8.6.112 |
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