CVE Explorer
CVE-2025-66488
Discourse is an open source discussion platform. A vulnerability present in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 affects anyone who uses S3 for uploads. While scripts may be executed, they will only be run in the context of the S3/CDN domain, with no site credentials. Versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 fix the issue. As a workaround, disallow html or xml files for uploads in authorized_extensions. For existing html xml uploads, site owners can consider dele
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"discourse","vendor":"discourse","versions":[{"status":"affected","version":"< 3.5.4"},{"status":"affected","version":">= 2025.11.0-latest, < 2025.11.2"},{"status":"affected","version":">= 2025.12.0-latest, < 2025.12.1"},{"status":"affected","version":">= 2026.1.0-latest, < 2026.1.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:0330f24f12e0af957fc3f49644d8a860fea6565fbc87a0db7573c48649203f73 · sha256:d8a29ede466acd26… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.6,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:0330f24f12e0af957fc3f49644d8a860fea6565fbc87a0db7573c48649203f73 · sha256:d8a29ede466acd26… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:0330f24f12e0af957fc3f49644d8a860fea6565fbc87a0db7573c48649203f73 · sha256:d8a29ede466acd26… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-68jp-3934-62rx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-68jp-3934-62rx"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0330f24f12e0af957fc3f49644d8a860fea6565fbc87a0db7573c48649203f73 · sha256:d8a29ede466acd26… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.