PT-2023-28905 · Discourse · Discourse

Highjomaxropublished · Published 2023-10-16 · Updated 2024-03-06 · CVE-2023-43659

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 3.1.1 Discourse version 3.2.0.beta1 and earlier

Description Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled.

Recommendations For versions prior to 3.1.1, upgrade to version 3.1.1 or later. For version 3.2.0.beta1 and earlier, upgrade to a later version. As a temporary workaround, consider enabling CSP on the forum to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-DISCOURSE-2023-43659

CVE-2023-43659

GHSA-G4QG-5Q2H-M8PH

Affected Products

Discourse

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43659.json · Exploit
• https://github.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8ph · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-43659 · Security Note
• https://osv.dev/vulnerability/CVE-2023-43659 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-discourse-2023-43659 · Vendor Advisory
• https://t.me/cvenotify/59549 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1714077438496350273 · Twitter Post
• https://twitter.com/CVEnew/status/1714027029803237758 · Twitter Post
• https://t.me/cibsecurity/72387 · Telegram Post
• https://twitter.com/cracbot/status/1714396853595517055 · Twitter Post
• https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP · Note