{"id":"EUVD-2026-9920","revision":null,"records":[{"revision":"3f305a1d3efc4f509db547ba01508d39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-28474","aliases":[],"title":"OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofing","description":"OpenClaw's Nextcloud Talk plugin versions prior to 2026.2.6 accept equality matching on the mutable actor.name display name field for allowlist validation, allowing attackers to bypass DM and room allowlists. 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An attacker can change their Ne…","description":"OpenClaw's Nextcloud Talk plugin versions prior to 2026.2.6 accept equality matching on the mutable actor.name display name field for allowlist validation, allowing attackers to bypass DM and room allowlists. 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An attacker can change their Nextcloud display name to match an allowlisted user ID and gain unauthorized access to restricted conversations.","state":0,"publishedAt":"2026-03-05T22:16:21.423+00:00","modifiedAt":"2026-09-17T18:16:40.903+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d","https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3r","https://www.vulncheck.com/advisories/openclaw-nextcloud-talk-allowlist-bypass-via-actorname-display-name-spoofing"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-28474","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-863"],"productCriteria":["cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-03-05T22:16:21.423","lastModified":"2026-09-17T18:16:40.903"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-28474","identifiers":["CVE-2026-28474"]},"retained":false,"historicalAffected":[]},{"revision":"1c45b22f2cf14583bc64f8f1039c2412","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-r5h9-vjqc-hq3r","aliases":["CVE-2026-28474"],"title":"Nextcloud Talk allowlist bypass via actor.name display name spoofing","description":"## Summary\n\nIn affected versions of the optional Nextcloud Talk plugin (installed separately; not bundled with the core OpenClaw install), an untrusted webhook field (`actor.name`, display name) could be treated as an allowlist identifier. An attacker could change their Nextcloud display name to match an allowlisted user ID and bypass DM or room allowlists.\n\n## Details\n\nNextcloud Talk webhook payloads provide a stable sender identifier (`actor.id`) and a mutable display name (`actor.name`). In affected versions, the plugin’s allowlist matching accepted equality on the display name, which is attacker-controlled.\n\n## Affected Packages / Versions\n\n- Package: `@openclaw/nextcloud-talk` (npm)\n- Affected: `<= 2026.2.2`\n- Fixed: `>= 2026.2.6`\n\nNote: This advisory applies to the optional Nextcloud Talk plugin package. Core `openclaw` is not impacted unless you installed and use `@openclaw/nextcloud-talk`.\n\n## Fix Commit(s)\n\n- [6b4b6049b47c3329a7014509594647826669892d](https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d)\n\n## Timeline\n\n- Introduced: [660f87278c9f292061e097441e0b10c20d62b31b](https://github.com/openclaw/openclaw/commit/660f87278c9f292061e097441e0b10c20d62b31b) (2026-01-20)\n- Fixed in repo: [6b4b6049b47c3329a7014509594647826669892d](https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d) (2026-02-04 UTC)\n- First fixed tag containing the change: [v2026.2.3](https://github.com/openclaw/openclaw/releases/tag/v2026.2.3)\n- First fixed npm release of `@openclaw/nextcloud-talk`: `2026.2.6` (published 2026-02-07 UTC)\n\n## Mitigation\n\nUpgrade `@openclaw/nextcloud-talk` to `>= 2026.2.6`.\n\n## Release Process Note\n\nThe patched version range is set to the first npm release that contains the fix. Once you are ready, you can publish this advisory without additional version edits.\n\nThanks @MegaManSec (https://joshua.hu) of [AISLE Research Team](https://aisle.com/) for reporting.","state":0,"publishedAt":"2026-02-17T21:36:15+00:00","modifiedAt":"2026-03-05T22:11:22.53172+00:00","affected":[{"ecosystem":"npm","name":"@openclaw/nextcloud-talk","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2026.2.6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3r","https://github.com/openclaw/openclaw/commit/660f87278c9f292061e097441e0b10c20d62b31b","https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d","https://github.com/openclaw/openclaw","https://github.com/openclaw/openclaw/releases/tag/v2026.2.3"],"sourceUrl":"https://github.com/advisories/GHSA-r5h9-vjqc-hq3r","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-r5h9-vjqc-hq3r","identifiers":["GHSA-r5h9-vjqc-hq3r","CVE-2026-28474"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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