Vulnerability · Published Nov 10, 2023 · Assigned by GitHub_M

CVE-2023-47119HTML injection in oneboxed links

Medium 5.3

In plain English

A medium-severity injection 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 0.9% (higher than 61% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.9%top 38.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official description

Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, some links can inject arbitrary HTML tags when rendered through our Onebox engine. The issue is patched in version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches. There are no known workarounds.

Affected products (as reported)

Vendor	Product	Versions
discourse	discourse	< 3.1.3>= 3.2.0.beta0, < 3.2.0.beta3

Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/discourse/discourse/security/advisories/GHSA-j95w-5hvx-jp5w x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/628b293ff53fb617b3464dd27268aec84388cc09 x_refsource_MISC
https://github.com/discourse/discourse/commit/d78357917c6a917a8a27af68756228e89c69321c x_refsource_MISC