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Medium severity5.4NVD Advisory· Published Mar 31, 2026· Updated Apr 9, 2026

CVE-2026-32243

CVE-2026-32243

Description

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an attacker with the ability to create shared AI conversations could inject arbitrary HTML and JavaScript via crafted conversation titles. This payload would execute in the browser of any user viewing the onebox preview, potentially allowing session hijacking or unauthorized actions on behalf of the victim. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

Affected products

3
  • Discourse (software)/Discourse3 versions
    cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*+ 2 more
    • cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*
    • cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest.1:*:*:*
    • cpe:2.3:a:discourse:discourse:*:*:*:*:latest:*:*:*range: >=2026.1.0,<2026.1.3

Patches

1
cac7d618a562
https://github.com/discourse/discoursevia nvd-ref
commit

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

2

News mentions

0

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