{"cve":"CVE-2026-28474","nvd":{"published":"2026-03-05T22:16:21.423","modified":"2026-09-17T18:16:40.903","status":"Analyzed","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. An attacker can change their Nextcloud display name to match an allowlisted user ID and gain unauthorized access to restricted conversations.","cvss_v4":{"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","score":9.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-863"],"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"],"products":["openclaw:openclaw"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-28474","score":0.00553,"percentile":0.46236,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r5h9-vjqc-hq3r","url":"https://osv.dev/vulnerability/GHSA-r5h9-vjqc-hq3r","summary":"Nextcloud Talk allowlist bypass via actor.name display name spoofing","modified":"2026-03-05T22:11:22.531720Z","packages":[{"ecosystem":"npm","name":"@openclaw/nextcloud-talk","purl":"pkg:npm/%40openclaw/nextcloud-talk","ranges":["<2026.2.6"],"fixed":["2026.2.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}