PT-2023-18510 · Discourse · Discourse

Highjomaxro · Published 2023-01-05 · Updated 2024-03-06 · CVE-2023-22454

Positive Technologies (AI Summary)

CVSS v3.1

8.0

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2.8.14 on the stable branch Discourse versions prior to 3.0.0.beta16 on the beta and tests-passed branches

Description The issue concerns a cross-site scripting attack through pending post titles, which can be created by unprivileged users in categories requiring moderator approval. This can lead to a full XSS on sites with modified or disabled Content Security Policy.

Recommendations For versions prior to 2.8.14 on the stable branch, update to version 2.8.14 or later. For versions prior to 3.0.0.beta16 on the beta and tests-passed branches, update to version 3.0.0.beta16 or later. As a temporary workaround, consider restricting the creation of pending posts in categories with the "require moderator approval of all new topics" setting set, until a patch is applied.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-DISCOURSE-2023-22454

CVE-2023-22454

GHSA-GGQ4-4QXC-C462

Affected Products

Discourse

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/22xxx/CVE-2023-22454.json · Exploit
• https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-22454 · Security Note
• https://osv.dev/vulnerability/CVE-2023-22454 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-discourse-2023-22454 · Vendor Advisory
• https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462 · Note
• https://t.me/cvenotify/41940 · Telegram Post
• https://t.me/cibsecurity/56006 · Telegram Post
• https://t.me/cvenotify/41357 · Telegram Post