Medium
Webapp DoS via malicious retrospective post in Playbooks
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-41395
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 15:55 UTC · Revision 1
Source evidence
Webapp DoS via malicious retrospective post in Playbooks
core-osv · Original sourcePublished 24 Apr 2025, 06:48 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 post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.
osv:CVE-2025-41395
Complete source record
{
"id": "9135039e566268302d1f8ba1932cffddf45c3b6549666a74f764c634daa28cdf",
"url": "https://osv.dev/vulnerability/CVE-2025-41395",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Webapp DoS via malicious retrospective post in Playbooks",
"summary": "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.",
"evidence": "osv:CVE-2025-41395",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-41395",
"aliases": [
"CVE-2025-41395",
"GHSA-3g36-gf7c-75qw",
"GO-2025-3642"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mattermost/mattermost",
"type": "GIT",
"events": [
{
"introduced": "0bc2ddd42375a75ab14e63f038165150d4f07659"
},
{
"fixed": "0e03b4f1cc90289ac8fe2520bed0fbf197abd74b"
},
{
"introduced": "7c8c0b7464fa9cd2fbfb97c65d1475b4be2e765c"
},
{
"fixed": "e644e3c8e3931a9432bbd23ff6a219c5664011e9"
},
{
"introduced": "58bd34fd34cbd7d3da777d627b6cffdf8a532930"
},
{
"fixed": "773b4a9b2e1a519609095f009e65f7143c84ca30"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.11.0"
},
{
"fixed": "9.11.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.4.0"
},
{
"fixed": "10.4.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.5.0"
},
{
"fixed": "10.5.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v9.11.10",
"v9.11.10-rc1",
"v9.11.9",
"v10.4.3-rc3",
"v10.5.1-rc2",
"v10.5.1-rc1",
"v9.11.9-rc2",
"v10.4.3-rc2",
"v9.11.9-rc1",
"v10.4.3-rc1",
"v10.5.0-rc6",
"v10.5.0",
"@mattermost/types@10.5.0",
"@mattermost/client@10.5.0",
"v9.11.8",
"v10.4.2",
"v9.11.7-rc3",
"v9.11.7",
"v10.4.1",
"v9.11.7-rc2",
"v10.4.0-rc3",
"v10.4.0",
"@mattermost/types@10.4.0",
"@mattermost/client@10.4.0",
"v9.11.7-rc1",
"v9.11.6",
"v9.11.6-rc2",
"v9.11.6-rc1",
"v9.11.5",
"v9.11.5-rc1",
"v9.11.4",
"v9.11.4-rc1",
"v9.11.3",
"v9.11.3-rc2",
"v9.11.3-rc1",
"v9.11.2",
"v9.11.2-rc2",
"v9.11.2-rc1",
"v9.11.1-rc1",
"v9.11.1",
"v9.11.0-rc3",
"v9.11.0",
"@mattermost/types@9.11.0",
"@mattermost/client@9.11.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-41395.json"
}
}
],
"modified": "2026-10-28T02:30:36.820383953Z",
"provider": "osv",
"references": [
"https://mattermost.com/security-updates",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/41xxx/CVE-2025-41395.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-41395"
],
"provider_metadata": {
"cwe_ids": [
"CWE-1287"
],
"cna_assigner": "Mattermost",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "10.5.0"
},
{
"last_affected": "10.5.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "10.4.0"
},
{
"last_affected": "10.4.2"
},
{
"introduced": "9.11.0"
},
{
"last_affected": "9.11.10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/41xxx/CVE-2025-41395.json"
}
},
"related_cves": [
{
"value": "CVE-2025-41395",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 504341,
"published_at": "2025-04-24T06:48:31.087+00:00"
}