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CVE-2026-32113 discourse CVE debrief

A vulnerability was discovered in the Discourse open-source discussion platform, affecting versions from 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. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0. Users of the Discourse open-source discussion platform, particularly those who have not updated to the patched versions, should be aware of this vulnerability and take necessary precautions.

Vendor
discourse
Product
Unknown
CVSS
MEDIUM 5.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-31
Original CVE updated
2026-07-24
Advisory published
2026-03-31
Advisory updated
2026-07-24

Who should care

Users of the Discourse open-source discussion platform, particularly those who have not updated to the patched versions 2026.1.3, 2026.2.2, or 2026.3.0, should be aware of this vulnerability and take necessary precautions to protect their systems.

Technical summary

The vulnerability exists in the StaticController of the Discourse platform, where the enter action reads the sso_destination_url cookie and redirects to it without proper validation. This allows attackers to set the cookie and redirect users to arbitrary URLs. The issue affects versions from 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 patched versions are 2026.1.3, 2026.2.2, and 2026.3.0.

Defensive priority

Medium

Recommended defensive actions

  • Update to patched versions 2026.1.3, 2026.2.2, or 2026.3.0
  • Verify and restrict access to the sso_destination_url cookie
  • Monitor for suspicious redirects and user activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-03-31T18:16:49.363Z and last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Analyzed. 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, which can be set by attackers. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0. Users should verify and restrict access to the sso_destination_url cookie and monitor for suspicious redirects and user activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-32113 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-32113

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-32113 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-32113

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.