Vulnerability · Published Mar 31, 2026 · Assigned by GitHub_M

CVE-2026-33073discourse-subscriptions plugin leaking stripe API key in multisite environment

Medium 5.3

In plain English

A medium-severity information exposure in discourse from discourse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 92.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the discourse-subscriptions plugin leaks stripe API keys across sites in a multisite cluster resulting in the potential for stripe related information to be leaked across sites within the same multisite cluster. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	>= 2026.1.0-latest, < 2026.1.3>= 2026.2.0-latest, < 2026.2.2>= 2026.3.0-latest, < 2026.3.0

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

References

https://github.com/discourse/discourse/security/advisories/GHSA-f866-8fcp-fgvv x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/c34f2aac8dcd1ae2886fa84256f607bc003f9d80 x_refsource_MISC