Medium
OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass
Type: advisorySources: OSV
OpenClaw before 2026.5.12 contains a notification bypass vulnerability allowing Slack reaction events to enter the agent pipeline despite disabled reaction notifications. Attackers can trigger unintended agent processing by sending reaction events when the feature is enabled, potentially leading to unauthorized processing of lower-trust input.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-53851
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 03:58 UTC · Revision 1
Source evidence
OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass
core-osv · Original sourcePublished 16 Jun 2026, 18:05 UTC
OpenClaw before 2026.5.12 contains a notification bypass vulnerability allowing Slack reaction events to enter the agent pipeline despite disabled reaction notifications. Attackers can trigger unintended agent processing by sending reaction events when the feature is enabled, potentially leading to unauthorized processing of lower-trust input.
osv:CVE-2026-53851
Complete source record
{
"id": "8160c4a87aa791f20a7e3722cee0f4e7be3f0d4660681c185169b1d159a0330d",
"url": "https://osv.dev/vulnerability/CVE-2026-53851",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass",
"summary": "OpenClaw before 2026.5.12 contains a notification bypass vulnerability allowing Slack reaction events to enter the agent pipeline despite disabled reaction notifications. Attackers can trigger unintended agent processing by sending reaction events when the feature is enabled, potentially leading to unauthorized processing of lower-trust input.",
"evidence": "osv:CVE-2026-53851",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-53851",
"aliases": [
"CVE-2026-53851",
"GHSA-fcvx-5cxc-v5p8"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openclaw/openclaw",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f066dd2f31c231f38fbcaacd6f6dfce0801143b3"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2026.5.12"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"cpe": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2026.5.12"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2026.5.12-beta.8",
"v2026.5.12-beta.7",
"v2026.5.12-beta.6",
"v2026.5.12-beta.5",
"v2026.5.12-beta.4",
"v2026.5.12-beta.3",
"v2026.5.12-beta.2",
"v2026.5.12-beta.1",
"v2026.4.19-beta.2",
"v2026.4.19-beta.1",
"v2026.4.15",
"v2026.4.15-beta.2",
"v2026.4.15-beta.1",
"v2026.4.14",
"v2026.4.14-beta.1",
"v2026.4.12",
"v2026.4.12-beta.1",
"v2026.4.11",
"v2026.4.11-beta.1",
"v2026.4.10",
"v2026.4.9",
"v2026.4.9-beta.1",
"v2026.4.8",
"v2026.4.7-1",
"v2026.4.7",
"v2026.4.5",
"v2026.4.2",
"v2026.4.1",
"v2026.4.1-beta.1",
"v2026.3.31",
"v2026.3.31-beta.1",
"v2026.3.28",
"v2026.3.28-beta.1",
"v2026.3.24",
"v2026.3.24-beta.2",
"v2026.3.24-beta.1",
"v2026.3.23-2",
"v2026.3.23",
"v2026.3.23-beta.1",
"v2026.3.22",
"v2026.3.22-beta.1",
"v2026.3.13-1",
"v2026.3.13",
"v2026.3.12",
"v2026.3.11",
"v2026.3.11-beta.1",
"v2026.3.8",
"v2026.3.8-beta.1",
"v2026.3.7",
"v2026.3.7-beta.1",
"v2026.3.2-beta.1",
"v2026.3.2",
"v2026.3.1",
"v2026.2.26",
"v2026.2.26-beta.1",
"v2026.2.25",
"v2026.2.25-beta.1",
"v2026.2.24",
"v2026.2.24-beta.1",
"v2026.2.23",
"v2026.2.23-beta.1",
"v2026.2.22",
"v2026.2.22-beta.1",
"v2026.2.21",
"v2026.2.21-beta.1",
"v2026.2.19-beta.1",
"v2026.2.19",
"v2026.2.17",
"v2026.2.15-beta.1",
"v2026.2.14",
"v2026.2.13",
"v2026.2.12",
"v2026.2.9",
"v2026.2.6-3",
"v2026.2.6-2",
"v2026.2.6-1",
"v2026.2.6",
"v2026.2.3",
"v2026.2.2",
"v2026.2.1",
"v2026.1.30",
"v2026.1.29",
"v2026.1.24-1",
"v2026.1.24",
"v2026.1.23",
"v2026.1.22",
"v2026.1.21",
"v2026.1.20",
"v2026.1.16-2",
"v2026.1.15",
"v2026.1.14-1",
"v2026.1.13",
"v2026.1.12-2",
"v2026.1.12",
"v2026.1.11-3",
"v2026.1.11-2",
"v2026.1.11-1",
"v2026.1.11",
"v2026.1.10",
"v2026.1.9",
"v2026.1.8",
"v2026.1.5-3",
"v2026.1.5-2",
"v2026.1.5-1",
"v2026.1.5",
"v2.0.0-beta5",
"v2.0.0-beta4",
"v2.0.0-beta3",
"v2.0.0-beta2",
"v2.0.0-beta1",
"v1.3.0",
"v1.2.2",
"v1.2.1",
"v1.2.0",
"v1.1.0",
"v1.0.4",
"v0.1.3",
"v0.1.2",
"v0.1.1",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53851.json"
}
}
],
"modified": "2026-10-28T02:30:42.097254908Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53851.json",
"https://github.com/openclaw/openclaw/security/advisories/GHSA-fcvx-5cxc-v5p8",
"https://nvd.nist.gov/vuln/detail/CVE-2026-53851",
"https://www.vulncheck.com/advisories/openclaw-slack-reaction-event-notification-bypass",
"https://github.com/openclaw/openclaw"
],
"provider_metadata": {
"cwe_ids": [
"CWE-862"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53851.json"
}
},
"related_cves": [
{
"value": "CVE-2026-53851",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510061,
"published_at": "2026-06-16T18:05:00.958+00:00"
}