{"id":"CVE-2026-25808","state":"PUBLISHED","title":"Hollo DMs get leaked and can be seen on Webfinger Browser","description":"Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2.","publishedAt":"2026-02-09T21:50:10.579Z","updatedAt":"2026-02-10T21:23:34.888Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["fedify-dev hollo"],"affected":[{"vendor":"fedify-dev","product":"hollo","versions":[{"version":"< 0.6.20, 0.7.2","status":"affected"},{"version":">= 7.0.0, < 0.7.2","status":"affected"}]}],"references":["https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5","https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e","https://github.com/fedify-dev/hollo/releases/tag/0.6.20","https://github.com/fedify-dev/hollo/releases/tag/0.7.2"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/25xxx/CVE-2026-25808.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-25808","state":"PUBLISHED","datePublished":"2026-02-09T21:50:10.579Z","dateUpdated":"2026-02-10T21:23:34.888Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-05T19:58:01.642Z"},"containers":{"cna":{"title":"Hollo DMs get leaked and can be seen on Webfinger Browser","descriptions":[{"lang":"en","value":"Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2."}],"affected":[{"vendor":"fedify-dev","product":"hollo","versions":[{"version":"< 0.6.20, 0.7.2","status":"affected"},{"version":">= 7.0.0, < 0.7.2","status":"affected"}]}],"references":[{"url":"https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5","name":"https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e","name":"https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e","tags":["x_refsource_MISC"]},{"url":"https://github.com/fedify-dev/hollo/releases/tag/0.6.20","name":"https://github.com/fedify-dev/hollo/releases/tag/0.6.20","tags":["x_refsource_MISC"]},{"url":"https://github.com/fedify-dev/hollo/releases/tag/0.7.2","name":"https://github.com/fedify-dev/hollo/releases/tag/0.7.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-09T21:50:10.579Z"},"source":{"advisory":"GHSA-6r2w-3pcj-v4v5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-10T21:23:28.921772Z","id":"CVE-2026-25808","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-10T21:23:34.888Z"}}]}}}