73 行
2.1 KiB
JSON
73 行
2.1 KiB
JSON
{
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"canonical_id": "mattermost--CVE-2026-4265",
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"system_id": "mattermost",
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"display_name": "Mattermost",
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"category": "platforms",
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"advisory_mode": "core",
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"title": "MMSA-2025-00553",
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"summary": "(CWE-284) Fixed an issue where guest users could bypass team-specific upload_file permission restrictions by uploading files in teams where they had permission and then posting those files to channels in teams where they lacked the permission. Thanks to 0x7oda7123 for contributing to this improvement under the Mattermost responsible disclosure policy.",
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"published_at": "2026-03-16",
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"updated_at": "2026-03-16",
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"severity": "medium",
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"cvss_score": null,
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"exploit_status": "unknown",
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"source_confidence": "official",
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"official_source_url": "https://securityupdates.mattermost.com/security_updates.json",
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"secondary_source_urls": [],
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"aliases": [
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"MMSA-2025-00553",
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"CVE-2026-4265"
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],
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"cve_ids": [
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"CVE-2026-4265"
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],
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"ghsa_ids": [],
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"osv_ids": [],
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"affected_versions": [
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"11.3.x <= 11.3.0",
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"11.2.x <= 11.2.2",
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"10.11.x <= 10.11.10"
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],
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"fixed_versions": [
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"11.4.0",
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"11.3.1",
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"11.2.3",
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"10.11.11"
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],
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"package_name": "Mattermost Server",
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"render_markdown": true,
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"case_path": "07-framework-security/platforms/mattermost/cases/mattermost-cve-2026-4265.md",
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"secure_code_topics": [
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"authz-server-side-recheck",
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"xss-output-encoding",
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"token-cookie-storage",
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"file-upload-validation"
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],
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"status": "generated",
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"triage_reasons": [],
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"verification_status": "triage-manual",
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"verification_mode": "synthetic",
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"last_verified_at": null,
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"last_run_id": null,
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"evidence_bundle": null,
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"historical_status": null,
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"latest_status": null,
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"browser_evidence": {
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"required": false,
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"present": false,
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"refs": []
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},
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"repro_profile_id": "xss-generic",
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"artifact_mode": "synthetic",
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"blocked_reason": null,
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"metadata": {
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"source_names": [
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"Mattermost Security Updates JSON"
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],
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"source_kinds": [
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"json-feed"
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],
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"candidate_count": 1
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}
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}
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