What is CVE-2026-47263?

CVE-2026-47263 is a medium-severity vulnerability in Discourse, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-06-12.

How severe is CVE-2026-47263?

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

Information disclosure in Discourse

CVE-2026-47263

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, the MessageBus.publish call for /web_hook_events/<id> in Jobs::R…

Vulnerability class: Information Disclosure

EPSS: 0.002 (11.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Discourse — versions >= 2026.4.0-latest, < 2026.4.1, 2026.5.0, >= 2026.3.0-latest, < 2026.3.1

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

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

Frequently asked questions

What is CVE-2026-47263?: CVE-2026-47263 is a medium-severity vulnerability in Discourse, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-06-12.
How severe is CVE-2026-47263?: Medium severity. CVSS v3 base score is 4.3 out of 10.