Vulnerability from bitnami_vulndb
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, restricted tag and tag-group names attached to publicly readable categories as allowed_tags, allowed_tag_groups, or required tag groups could leak to anonymous and unauthorized users through category and group endpoints. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
{
"affected": [
{
"package": {
"ecosystem": "Bitnami",
"name": "discourse",
"purl": "pkg:bitnami/discourse"
},
"ranges": [
{
"events": [
{
"introduced": "2026.1.0"
},
{
"fixed": "2026.1.5"
},
{
"introduced": "2026.4.0"
},
{
"fixed": "2026.4.2"
},
{
"introduced": "2026.5.0"
},
{
"fixed": "2026.5.1"
}
],
"type": "SEMVER"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
],
"aliases": [
"CVE-2026-49256"
],
"database_specific": {
"cpes": [
"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*"
],
"severity": "High"
},
"details": "Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, restricted tag and tag-group names attached to publicly readable categories as allowed_tags, allowed_tag_groups, or required tag groups could leak to anonymous and unauthorized users through category and group endpoints. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.",
"id": "BIT-discourse-2026-49256",
"modified": "2026-09-10T15:46:03.895Z",
"published": "2026-07-15T15:56:20.616Z",
"references": [
{
"type": "FIX",
"url": "https://github.com/discourse/discourse/releases/tag/v2026.1.5"
},
{
"type": "ARTICLE",
"url": "https://github.com/discourse/discourse/releases/tag/v2026.4.2"
},
{
"type": "ARTICLE",
"url": "https://github.com/discourse/discourse/releases/tag/v2026.5.1"
},
{
"type": "ARTICLE",
"url": "https://github.com/discourse/discourse/releases/tag/v2026.6.0"
},
{
"type": "ADVISORY",
"url": "https://github.com/discourse/discourse/security/advisories/GHSA-mwp7-572g-6qpx"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49256"
}
],
"schema_version": "1.6.2",
"summary": "Discourse: Hidden tag names leaked via category serializers"
}
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| Author | Source | Type | Date | Other |
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Nomenclature
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