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CVE-2026-32113

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 an
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3a37efc8af350878e52e2d18f87c4bf38f0ff6f9e010b4b39a37a5c8078be052
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"discourse","vendor":"discourse","versions":[{"status":"affected","version":">= 2026.1.0-latest, < 2026.1.3"},{"status":"affected","version":">= 2026.2.0-latest, < 2026.2.2"},{"status":"affected","version":">= 2026.3.0-latest, < 2026.3.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-601","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884d","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/cna/references/1
{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://meta.discourse.org/t/use-discourse-as-an-identity-provider-sso-discourseconnect/32974"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/adp/0/references/0
{"name":"https://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974","tags":["x_refsource_MISC"],"url":"https://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:79c67101aafcb31b654ddad148da21a81acb1f475e4a4e5d0492894197bbdfaa · sha256:a854dc4a690eea97… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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