Vulnerability · Published May 5, 2025 · Assigned by GitHub_M

CVE-2025-46813Private data leak on login-required Discourse sites

Medium 5.8

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 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)5.8Medium

Exploit odds (30 days)0.4%top 62.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Discourse is an open-source community platform. A data leak vulnerability affects sites deployed between commits 10df7fdee060d44accdee7679d66d778d1136510 and 82d84af6b0efbd9fa2aeec3e91ce7be1a768511b. On login-required sites, the leak meant that some content on the site's homepage could be visible to unauthenticated users. Only login-required sites that got deployed during this timeframe are affected, roughly between April 30 2025 noon EDT and May 2 2025, noon EDT. Sites on the stable branch are unaffected. Private content on an instance's homepage could be visible to unauthenticated users on login-required sites. Versions of 3.5.0.beta4 after commit 82d84af6b0efbd9fa2aeec3e91ce7be1a768511b are not vulnerable to the issue. No workarounds are available. Sites must upgrade to a non-vulnerable version of Discourse.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	>= 10df7fdee060d44accdee7679d66d778d1136510, <= 82d84af6b0efbd9fa2aeec3e91ce7be1a768511b

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

References

https://github.com/discourse/discourse/security/advisories/GHSA-v3h7-c287-pfg9 x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/10df7fdee060d44accdee7679d66d778d1136510 x_refsource_MISC
https://github.com/discourse/discourse/commit/82d84af6b0efbd9fa2aeec3e91ce7be1a768511b x_refsource_MISC