CVE Explorer
CVE-2025-66512
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside of the Nextcloud Servers web page.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"security-advisories","vendor":"nextcloud","versions":[{"status":"affected","version":">= 32.0.0beta1, < 32.0.3"},{"status":"affected","version":"< 31.0.12"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/references/0
{"name":"https://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/references/2
{"name":"https://github.com/nextcloud/viewer/pull/3023","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/viewer/pull/3023"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/references/1
{"name":"https://hackerone.com/reports/3357808","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3357808"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f8dca230bc26efcbb69dc3eabb2421f856d5152825be84a76d8443acfeaaf18d · sha256:42923395ea1699ab… · /containers/cna/references/3
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.