EUVD-2026-37153PublishedWithdrawn

OpenClaw < 2026.5.12 - Slack Reaction Event Notification Bypass

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-53851

Published

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.

Source published: 16 Jun 2026 18:05:00 UTC
Source modified: 16 Jun 2026 18:55:36 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 6.3 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

CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

euvd · EUVD-2026-37153

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jun 16, 2026, 6:05:00 PM

dateUpdated: Jun 16, 2026, 6:55:36 PM

Source published: Jun 16, 2026, 6:05:00 PM (timezone not stated)
Source modified: Jun 16, 2026, 6:55:36 PM (timezone not stated)
Observed here: 7 Nov 2026 12:27:24 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 6.3 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

nvd · CVE-2026-53851

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-862

Original publisher date fields

published: 2026-06-16T19:17:02.327

lastModified: 2026-10-25T23:10:00.167

9 source CPE criteria · context only

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta1:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta2:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta3:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta4:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta5:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta6:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta7:*:*:*:node.js:*:*
cpe:2.3:a:openclaw:openclaw:2026.5.12:beta8:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 16 Jun 2026 19:17:02 UTC
Source modified: 25 Oct 2026 23:10:00 UTC
Observed here: 27 Oct 2026 14:13:29 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 6.3 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/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

CVSS 3.1 · [email protected] · Secondary · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

osv · GHSA-c8w7-9w9h-x69q

Withdrawn

## 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.

Source published: 16 Jun 2026 21:31:58 UTC
Source modified: 18 Jun 2026 20:15:17 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS_V4 · 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

Publisher rating · MODERATE

osv · GHSA-fcvx-5cxc-v5p8

Published

### Summary Slack reaction events could ignore reaction notification settings. In affected versions, a Slack reaction event delivered to the configured app could enter the agent pipeline even when reaction notifications were disabled. This advisory is scoped to the named feature and configuration. It does not change OpenClaw's trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed. ### Impact When the affected feature is enabled and reachable, this could trigger unintended agent processing for reaction events. Practical impact depends on the operator's configuration and whether lower-trust input can reach that path. ### Patched Versions The first stable patched version is `2026.5.12`. ### Mitigations disable or restrict Slack reaction event subscriptions until patched if this path is not needed. As general hardening, keep channel and tool allowlists narrow, avoid sharing one Gateway between mutually untrusted users, and disable the affected feature when it is not needed.

Source published: 18 Jun 2026 20:13:11 UTC
Source modified: 18 Jun 2026 20:26:31 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS_V4 · 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

Publisher rating · MODERATE