What is CVE-2026-33514?

CVE-2026-33514 is a medium-severity vulnerability in Discourse, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-05-19.

How severe is CVE-2026-33514?

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

Auth bypass in Discourse

CVE-2026-33514

Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, an authenticated user on a Discourse instance with the form templates feature enabled can read the name and structure…

Vulnerability class: Broken Access Control

EPSS: 0.000 (8.9th 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 < 2026.1.4, >= 2026.4.0-latest, < 2026.4.1, 2026.5.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33514?: CVE-2026-33514 is a medium-severity vulnerability in Discourse, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-05-19.
How severe is CVE-2026-33514?: Medium severity. CVSS v3 base score is 4.3 out of 10.