What is CVE-2024-53266?

CVE-2024-53266 is a medium-severity vulnerability in Discourse, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2025-02-04.

How severe is CVE-2024-53266?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2024-53266 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Discourse

CVE-2024-53266

Discourse is an open source platform for community discussion. In affected versions with some combinations of plugins, and with CSP disabled, activity streams in the user's profile page may be vulnerable to XSS. This has been patched in the latest version of Discourse core. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (18.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Discourse — versions tests-passed: < 3.4.0.beta4, 3.4.0, stable: < 3.3.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2024-53266?: CVE-2024-53266 is a medium-severity vulnerability in Discourse, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2025-02-04.
How severe is CVE-2024-53266?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2024-53266 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.