CVE-2026-32113Discourse is an open-source discussion platform.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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, the enter action in StaticController reads the sso_destination_url cookie and redirects to it with allow_other_host: true without validating the destination URL. While this cookie is normally set during legitimate DiscourseConnect Provider flows with cryptographically validated SSO payloads, cookies are client-controlled and can be set by attackers. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
- CVSS
- 6.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-601
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
discourse discourse discourse:discourse | from 2026.1.0 before 2026.1.3; from 2026.2.0 before 2026.2.2; 2026.3.0; 2026.3.0 | NVD |
References
- https://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884dpatch
- https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwhmitigation, vendor-advisory
- https://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974product
- https://meta.discourse.org/t/use-discourse-as-an-identity-provider-sso-discourseconnect/32974product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.