Is CVE-2026-33427 actively exploited?

No active exploitation of CVE-2026-33427 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33427 be exploited remotely?

Yes. CVE-2026-33427 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33427?

CVE-2026-33427 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-33427

HIGH

CVE-2026-33427

CWE-862Published: March 21, 2026· Updated: Mar 24, 2026

7.5

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.4th

Official Description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

NVD Source

Technical Analysis

CVE-2026-33427 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.