{"id":"CVE-2026-32896","aliases":["EUVD-2026-13972","GHSA-5mx2-2mgw-x8rm","GHSA-vh4c-j2xv-9pv9"],"status":"published","title":"OpenClaw \u003c 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin","description":"The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00259,"percentile":0.1779,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-306"],"published":"2026-03-03T21:35:56Z","modified":"2026-10-28T02:31:03Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.21"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2026.2.21"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.21"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rm","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590","tags":["patch","Patch","fix","web"]},{"url":"https://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugin","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32896","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5mx2-2mgw-x8rm"},{"url":"https://github.com/advisories/GHSA-vh4c-j2xv-9pv9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32896.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-32896","title":"OpenClaw \u003c 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin","description":"The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","status":"published","published":"2026-03-21T00:42:32.222Z","modified":"2026-09-17T17:54:16.099Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:19:57.47301Z"}],"euvd":[{"id":"EUVD-2026-13972","description":"The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","status":"published","published":"2026-03-21T00:42:32Z","modified":"2026-09-17T17:54:16Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:28:10.833571Z"}],"ghsa":[{"id":"GHSA-5mx2-2mgw-x8rm","title":"OpenClaw: BlueBubbles beta plugin webhook auth hardening (remove passwordless fallback)","description":"### Summary\nBlueBubbles webhook auth in the optional beta iMessage plugin allowed a passwordless fallback path. In some reverse-proxy/local routing setups, this could allow unauthenticated webhook events.\n\n### Affected Component and Scope\n- Component: `extensions/bluebubbles` webhook handler\n- Scope: only deployments using the optional BlueBubbles plugin where webhook password auth was not configured for incoming webhook events\n\n### Affected Packages / Versions\n- Package: `openclaw/openclaw` (npm)\n- Latest published npm version at triage time (2026-02-21): `2026.2.19-2`\n- Affected structured range: `\u003c=2026.2.19-2`\n- Fixed on `main`; planned patched release: `2026.2.21` (`\u003e=2026.2.21`)\n\n### Details\nThe vulnerable implementation had multiple auth branches, including a passwordless fallback with loopback/proxy heuristics.\n\nThe fix now uses one authentication codepath:\n- inbound webhook token/guid must match `channels.bluebubbles.password`\n- webhook target matching is consolidated to shared plugin-sdk logic\n- BlueBubbles config validation now requires `password` when `serverUrl` is set\n\n### Impact\nBlueBubbles is an optional beta iMessage plugin, and onboarding/channel-add flows already require a password. Practical exposure is mainly custom/manual configurations that omitted webhook password authentication.\n\n### Remediation\n- Upgrade to a release that includes this patch (`\u003e=2026.2.21`, planned).\n- Ensure BlueBubbles webhook delivery includes a matching password (`?password=\u003cpassword\u003e` or `x-password`).\n\n### Fix Commit(s)\n- `6b2f2811dc623e5faaf2f76afaa9279637174590`\n- `283029bdea23164ab7482b320cb420d1b90df806`\n\n### Release Process Note\n`patched_versions` is pre-set to the planned next release (`2026.2.21`) so once npm release is out, advisory publish can proceed without additional ticket edits.\n\nOpenClaw thanks @zpbrent for reporting.","status":"published","published":"2026-03-03T21:35:56Z","modified":"2026-03-30T13:45:44Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:39:46.119458Z"},{"id":"GHSA-vh4c-j2xv-9pv9","title":"Duplicate Advisory: OpenClaw: BlueBubbles beta plugin webhook auth hardening (remove passwordless fallback)","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-5mx2-2mgw-x8rm. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions prior to 2026.2.21 BlueBubbles webhook handler contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","status":"withdrawn","published":"2026-03-21T03:31:15Z","modified":"2026-03-24T19:07:37Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/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","level":"medium"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:39:41.724707Z"}],"nvd":[{"id":"CVE-2026-32896","description":"The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","status":"published","published":"2026-03-21T01:17:10.51Z","modified":"2026-09-17T18:16:41.327Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/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","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:10.126802Z"}],"osv":[{"id":"CVE-2026-32896","title":"OpenClaw \u003c 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin","description":"The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","status":"published","published":"2026-03-21T00:42:32.222Z","modified":"2026-10-28T02:31:03.490405155Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:45:01.548715Z"},{"id":"GHSA-5mx2-2mgw-x8rm","title":"OpenClaw: BlueBubbles beta plugin webhook auth hardening (remove passwordless fallback)","description":"### Summary\nBlueBubbles webhook auth in the optional beta iMessage plugin allowed a passwordless fallback path. In some reverse-proxy/local routing setups, this could allow unauthenticated webhook events.\n\n### Affected Component and Scope\n- Component: `extensions/bluebubbles` webhook handler\n- Scope: only deployments using the optional BlueBubbles plugin where webhook password auth was not configured for incoming webhook events\n\n### Affected Packages / Versions\n- Package: `openclaw/openclaw` (npm)\n- Latest published npm version at triage time (2026-02-21): `2026.2.19-2`\n- Affected structured range: `\u003c=2026.2.19-2`\n- Fixed on `main`; planned patched release: `2026.2.21` (`\u003e=2026.2.21`)\n\n### Details\nThe vulnerable implementation had multiple auth branches, including a passwordless fallback with loopback/proxy heuristics.\n\nThe fix now uses one authentication codepath:\n- inbound webhook token/guid must match `channels.bluebubbles.password`\n- webhook target matching is consolidated to shared plugin-sdk logic\n- BlueBubbles config validation now requires `password` when `serverUrl` is set\n\n### Impact\nBlueBubbles is an optional beta iMessage plugin, and onboarding/channel-add flows already require a password. Practical exposure is mainly custom/manual configurations that omitted webhook password authentication.\n\n### Remediation\n- Upgrade to a release that includes this patch (`\u003e=2026.2.21`, planned).\n- Ensure BlueBubbles webhook delivery includes a matching password (`?password=\u003cpassword\u003e` or `x-password`).\n\n### Fix Commit(s)\n- `6b2f2811dc623e5faaf2f76afaa9279637174590`\n- `283029bdea23164ab7482b320cb420d1b90df806`\n\n### Release Process Note\n`patched_versions` is pre-set to the planned next release (`2026.2.21`) so once npm release is out, advisory publish can proceed without additional ticket edits.\n\nOpenClaw thanks @zpbrent for reporting.","status":"published","published":"2026-03-03T21:35:56Z","modified":"2026-03-30T14:11:33.153599Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:46:38.553953Z"},{"id":"GHSA-vh4c-j2xv-9pv9","title":"Duplicate Advisory: OpenClaw: BlueBubbles beta plugin webhook auth hardening (remove passwordless fallback)","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-5mx2-2mgw-x8rm. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions prior to 2026.2.21 BlueBubbles webhook handler contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.","status":"withdrawn","published":"2026-03-21T03:31:15Z","modified":"2026-03-24T19:17:30.917468Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/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","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:46:57.348035Z"}]}}