CVE-2025-47700Network attack vector

User redirection via empty post-action bodies

Published Aug 21, 2025 · Updated Aug 21, 2025

SSRF in the Agents plugin for Mattermost Server 10.5.0 through 10.5.8 allows remote authenticated users to present malicious links. Agents plugin post-action handlers accept an empty request body and still produce an actionable link instead of rejecting the request. A logged-in user must create the post action, and another user must click it; the published impact is limited to link-mediated integrity loss.

CVSS severity3.5
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in the Agents plugin for Mattermost Server 10.5.0 through 10.5.8 allows remote authenticated users to present malicious links. Agents plugin post-action handlers accept an empty request body and still produce an actionable link instead of rejecting the request. A logged-in user must create the post action, and another user must click it; the published impact is limited to link-mediated integrity loss.

The record

CVE
CVE-2025-47700
Published
Aug 21, 2025
Updated
Aug 21, 2025
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-918, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.5.0 <=10.5.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mattermost · Mattermostversion=10.5.0 <=10.5.8

Published CVSS scores

3.5Mattermost, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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