CVE-2026-45775

Source
https://cve.org/CVERecord?id=CVE-2026-45775
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45775.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45775
Aliases
Published
2026-06-12T20:25:33.729Z
Modified
2026-07-15T01:49:13.513160289Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Discourse: Cross-site backup access via path traversal in multisite local backups
Details

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, a path traversal vulnerability in Discourse backup handling could allow an authenticated administrator on one site in a multisite deployment to access backup files belonging to another site when backups are stored locally. In affected configurations, an admin on Site A could potentially retrieve sensitive backup data from Site B (same host, multisite) by crafting a backup download request with a traversal payload. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.

Database specific
{
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45775.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/discourse/discourse

Affected ranges

Type
GIT
Repo
https://github.com/discourse/discourse
Events
Database specific
{
    "extracted_events": [
        {
            "introduced": "2026.1.0-latest"
        },
        {
            "fixed": "2026.1.4"
        },
        {
            "introduced": "2026.3.0-latest"
        },
        {
            "fixed": "2026.3.1"
        },
        {
            "introduced": "2026.4.0-latest"
        },
        {
            "fixed": "2026.4.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2026.*
2026.5.0
Other
esr
stable
v2026.*
v2026.1.0
v2026.1.0-latest
v2026.1.1
v2026.1.2
v2026.1.3
v2026.3.0
v2026.3.0-latest
v2026.3.0-latest.1
v2026.4.0
v2026.4.0-latest

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45775.json"