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Webapp DoS via malicious retrospective post in Playbooks

cve-program · CVE-2025-41395

Published

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Read the publisher's advisory

euvd · EUVD-2025-12104

Published

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Read the publisher's advisory

nvd · CVE-2025-41395

Published

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Read the publisher's advisory

osv · GHSA-3g36-gf7c-75qw

Published

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Read the publisher's advisory

osv · GO-2025-3642

Published

Mattermost Playbooks fails to properly validate the props used by the RetrospectivePost custom post type in github.com/mattermost/mattermost-plugin-playbooks. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: .

Read the publisher's advisory

Affected versions, risk and source history

Exploitation and risk

Source status

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Risk history

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Advisory history

14 saved versions

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15 Nov 2026 04:31:09 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

13 Nov 2026 04:18:48 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

11 Nov 2026 03:27:26 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

9 Nov 2026 02:20:36 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

7 Nov 2026 01:36:11 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

5 Nov 2026 01:09:50 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

3 Nov 2026 00:09:11 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

31 Oct 2026 23:15:23 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

29 Oct 2026 22:58:47 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

27 Oct 2026 21:59:42 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

euvd · EUVD-2025-12104 · Published

25 Oct 2026 02:24:48 UTC

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted pos…

nvd · CVE-2025-41395 · Published

24 Oct 2026 13:19:41 UTC

Mattermost Playbooks fails to properly validate the props used by the RetrospectivePost custom post type

osv · GHSA-3g36-gf7c-75qw · Published

24 Oct 2026 13:19:41 UTC

Mattermost Playbooks fails to properly validate the props used by the RetrospectivePost custom post type in github.com/mattermost/mattermost-plugin-playbooks

osv · GO-2025-3642 · Published

23 Oct 2026 15:48:27 UTC

Webapp DoS via malicious retrospective post in Playbooks

cve-program · CVE-2025-41395 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 12:11 UTC · 256 of 275 readable · 252 fully read · documentation 469/469 current