{"id":"CVE-2026-48976","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-48976","generatedAt":"2026-10-28T01:39:40.075Z","title":"An authenticated user who supplies another tenant's notifier UUID to PUT /v1/notifiers/{id} can read the returned stored url, which may contain plaintext Shoutrrr credentials for Slack, SMTP, Telegram, Pushover, or Discord, and can replace the URL to…","description":"HomeBox is a home inventory and organization system. Prior to 0.26.0, NotifierRepository.Update in backend/internal/data/repo/repo_notifier.go updates a notifier through UpdateOneID(id) without requiring the record's user ID to match the authenticated user. An authenticated user who supplies another tenant's notifier UUID to PUT /v1/notifiers/{id} can read the returned stored url, which may contain plaintext Shoutrrr credentials for Slack, SMTP, Telegram, Pushover, or Discord, and can replace the URL to redirect the victim's notifications to an attacker-controlled webhook. This issue is fixed in version 0.26.0.","published":"2026-09-21T18:17:09.000Z","lastModified":"2026-09-23T18:26:49.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-522","CWE-639"],"affected":[],"epss":{"score":0.00449,"percentile":0.38751,"date":"2026-10-26","history":[{"date":"2026-09-22","score":0.00251,"percentile":0.16797}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-21T18:17:09.000Z","detail":{"score":"8.1","severity":"HIGH","publishedAt":"2026-09-21T18:17:08.557Z"},"summary":"New CVE, high severity (CVSS 8.1)."}],"references":[{"url":"https://github.com/sysadminsmedia/homebox/commit/ed3216a80998dfd81d4418700696244144883160","source":"security-advisories@github.com"},{"url":"https://github.com/sysadminsmedia/homebox/releases/tag/v0.26.0","source":"security-advisories@github.com"},{"url":"https://github.com/sysadminsmedia/homebox/security/advisories/GHSA-mc8h-5c5v-37p7","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-48976","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}