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CVE-2026-33410

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the `target_groups` parameter was passed directly to the user resolution query without checking group or member visibility for the acting user. An authenticated chat user could craft an API request with a known private/hidden group name and receiv
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bc4eab386abf1273c71b056a875d2ef5044cd3bf385f876948161802d259872a
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:v2:710602c50b66ad3ac44a83b73d0a8f2ade857aa5f5777232f15b4e26ecddaeb0 · sha256:d223f95aecb572ac… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:710602c50b66ad3ac44a83b73d0a8f2ade857aa5f5777232f15b4e26ecddaeb0 · sha256:d223f95aecb572ac… · /containers/cna/metrics/0/cvssV3_1

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:v2:710602c50b66ad3ac44a83b73d0a8f2ade857aa5f5777232f15b4e26ecddaeb0 · sha256:d223f95aecb572ac… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-2m5j-6v2r-cq2h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-2m5j-6v2r-cq2h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:710602c50b66ad3ac44a83b73d0a8f2ade857aa5f5777232f15b4e26ecddaeb0 · sha256:d223f95aecb572ac… · /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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