Vulnerability · Published Sep 30, 2021 · Assigned by GitHub_M

CVE-2021-41109LiveQuery publishes user session tokens

High 7.5

In plain English

A high-severity information exposure in parse-server from parse-community. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.2%top 30.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to version 4.10.4, for regular (non-LiveQuery) queries, the session token is removed from the response, but for LiveQuery payloads it is currently not. If a user has a LiveQuery subscription on the `Parse.User` class, all session tokens created during user sign-ups will be broadcast as part of the LiveQuery payload. A patch in version 4.10.4 removes session tokens from the LiveQuery payload. As a workaround, set `user.acl(new Parse.ACL())` in a beforeSave trigger to make the user private already on sign-up.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	parse-server	4.10.4	GHSA-7pr3-p5fm-8r9x

Affected products (as reported)

Vendor	Product	Versions
parse-community	parse-server	< 4.10.4

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/parse-community/parse-server/security/advisories/GHSA-7pr3-p5fm-8r9x x_refsource_CONFIRM
https://github.com/parse-community/parse-server/commit/4ac4b7f71002ed4fbedbb901db1f6ed1e9ac5559 x_refsource_MISC
https://github.com/parse-community/parse-server/releases/tag/4.10.4 x_refsource_MISC