Vulnerability · Published Jan 5, 2023 · Assigned by GitHub_M

CVE-2022-23549Discourse vulnerable to bypass of post max_length using HTML comments

Medium 5.7

In plain English

A medium-severity improper input validation 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 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)5.7Medium

Exploit odds (30 days)0.6%top 50.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	2.8.14 – before 2.8.142.9.0.beta0 – through 2.9.0.beta02.9.0.beta16 – before 2.9.0.beta16

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

In plain English

Official description

Affected products (as reported)

References