Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-c8w7-9w9h-x69q
Advisory ID github_osv/GHSA-c8w7-9w9h-x69q
Aliases
Summary Duplicate Advisory: Slack reaction events could ignore reaction notification settings ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-fcvx-5cxc-v5p8. This link is maintained to preserve external references. ## Original Description 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.
Status Published
Exploitability 0.5
Weighted Severity 5.7
Risk 2.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-862 Missing Authorization
System Score Found at
cvssv3.1 5.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c8w7-9w9h-x69q/GHSA-c8w7-9w9h-x69q.json
cvssv4 6.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c8w7-9w9h-x69q/GHSA-c8w7-9w9h-x69q.json
generic_textual MODERATE
Reference id Reference type URL
CVE-2026-53851 https://nvd.nist.gov/vuln/detail/CVE-2026-53851
GHSA-fcvx-5cxc-v5p8 Advisory https://github.com/openclaw/openclaw/security/advisories/GHSA-fcvx-5cxc-v5p8
openclaw-slack-reaction-event-notification-bypass Advisory https://www.vulncheck.com/advisories/openclaw-slack-reaction-event-notification-bypass
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c8w7-9w9h-x69q/GHSA-c8w7-9w9h-x69q.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: 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 Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-c8w7-9w9h-x69q/GHSA-c8w7-9w9h-x69q.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.