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CVE-2026-28282

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a private/restricted group has been obtained, the user will be able to read private topics that only the group has access to. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workarou
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0fe6e7f1444af37d70eff38c14a5210ac65c07c1b89ce02488b92c16c5847949
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, < 2026.1.2"},{"status":"affected","version":">= 2026.2.0-latest, < 2026.2.1"},{"status":"affected","version":"= 2026.3.0-latest"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":2.3,"baseSeverity":"LOW","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/discourse/discourse/commit/64e2514ac17046cfaa8bc68a3c5140bc40736add","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/64e2514ac17046cfaa8bc68a3c5140bc40736add"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/references/1
{"name":"https://github.com/discourse/discourse/commit/c14b8a4cc5fc94e4839a83c5d55765897589f45b","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/c14b8a4cc5fc94e4839a83c5d55765897589f45b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/references/2
{"name":"https://github.com/discourse/discourse/commit/dcde9de530f515e88f99957056ffbcc2e1e03951","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/dcde9de530f515e88f99957056ffbcc2e1e03951"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/references/3
{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-6cc8-x3rm-j5pf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-6cc8-x3rm-j5pf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ce241536b5dd6ae0434c07dc353b17e48ccd6b715cf01409017294b052b7559b · sha256:bce7ff2d921542ec… · /containers/cna/references/0

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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