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Publish Advisories
GHSA-jp57-4x34-5v94 GHSA-m497-hq5x-6jcv GHSA-jp57-4x34-5v94 GHSA-m497-hq5x-6jcv
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‎advisories/github-reviewed/2022/05/GHSA-jp57-4x34-5v94/GHSA-jp57-4x34-5v94.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-jp57-4x34-5v94",
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"modified": "2025-12-05T22:00:33Z",
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"published": "2022-05-24T17:21:04Z",
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"aliases": [
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"CVE-2017-18889"
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],
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"summary": "Mattermost Server is vulnerable to webhook and slash command manipulation",
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"details": "An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-message posts via webhooks and slash commands, in the v3 or v4 REST API.",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/mattermost/mattermost-server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "4.1.2"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/mattermost/mattermost-server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "4.2.0-rc1"
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},
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{
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"fixed": "4.2.1"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/mattermost/mattermost-server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "4.3.0-rc1"
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},
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{
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"fixed": "4.3.0"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "ADVISORY",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18889"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/mattermost/mattermost"
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},
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{
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"type": "WEB",
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"url": "https://mattermost.com/security-updates"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-20"
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],
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"severity": "MODERATE",
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"github_reviewed": true,
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"github_reviewed_at": "2025-12-05T22:00:33Z",
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"nvd_published_at": "2020-06-19T19:15:00Z"
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}
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}

‎advisories/github-reviewed/2022/05/GHSA-m497-hq5x-6jcv/GHSA-m497-hq5x-6jcv.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-m497-hq5x-6jcv",
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"modified": "2025-12-05T22:00:48Z",
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"published": "2022-05-24T17:21:05Z",
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"aliases": [
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"CVE-2017-18890"
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],
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"summary": "Mattermost Server allows attackers to create buttons that can launch API requests",
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"details": "An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows an attacker to create a button that, when pressed by a user, launches an API request.",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/mattermost/mattermost-server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "4.1.2"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/mattermost/mattermost-server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "4.2.0-rc1"
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},
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{
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"fixed": "4.2.1"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/mattermost/mattermost-server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "4.3.0-rc1"
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},
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{
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"fixed": "4.3.0"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "ADVISORY",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18890"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/mattermost/mattermost"
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},
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{
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"type": "WEB",
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"url": "https://mattermost.com/security-updates"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-20"
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],
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"severity": "MODERATE",
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"github_reviewed": true,
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"github_reviewed_at": "2025-12-05T22:00:47Z",
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"nvd_published_at": "2020-06-19T19:15:00Z"
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}
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}

‎advisories/unreviewed/2022/05/GHSA-jp57-4x34-5v94/GHSA-jp57-4x34-5v94.json‎

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‎advisories/unreviewed/2022/05/GHSA-m497-hq5x-6jcv/GHSA-m497-hq5x-6jcv.json‎

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