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advisory-database[bot]advisory-database[bot]
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Publish Advisories
GHSA-876j-jfqf-m7j7 GHSA-w8cc-3h7q-jhc3 GHSA-876j-jfqf-m7j7 GHSA-w8cc-3h7q-jhc3
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‎advisories/github-reviewed/2022/05/GHSA-876j-jfqf-m7j7/GHSA-876j-jfqf-m7j7.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-876j-jfqf-m7j7",
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"modified": "2025-12-05T19:38:03Z",
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"published": "2022-05-24T17:21:04Z",
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"aliases": [
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"CVE-2017-18884"
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],
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"summary": "Mattermost Server exposes OAuth personal access tokens to attackers",
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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 attackers to gain privileges by using a registered OAuth application with personal access tokens.",
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"severity": [
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{
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"type": "CVSS_V4",
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"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA: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-2017-18884"
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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-269",
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"CWE-863"
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],
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"severity": "CRITICAL",
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"github_reviewed": true,
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"github_reviewed_at": "2025-12-05T19:38:03Z",
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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-w8cc-3h7q-jhc3/GHSA-w8cc-3h7q-jhc3.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-w8cc-3h7q-jhc3",
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"modified": "2025-12-05T19:37:33Z",
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"published": "2022-05-24T17:21:03Z",
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"aliases": [
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"CVE-2017-18883"
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],
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"summary": "Mattermost Server has low entropy for authorization data as an OAuth 2.0 Service Provider",
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"details": "An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provider. There is low entropy for authorization data.",
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"severity": [
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{
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"type": "CVSS_V4",
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"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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-2017-18883"
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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-331"
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],
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"severity": "MODERATE",
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"github_reviewed": true,
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"github_reviewed_at": "2025-12-05T19:37:33Z",
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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-876j-jfqf-m7j7/GHSA-876j-jfqf-m7j7.json‎

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‎advisories/unreviewed/2022/05/GHSA-w8cc-3h7q-jhc3/GHSA-w8cc-3h7q-jhc3.json‎

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