CVE Explorer
CVE-2025-66514
Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Prior to 5.5.3, a stored HTML injection in the Mail app's message list allowed an authenticated user to inject HTML into the email subjects. Javascript was correctly blocked by the content security policy of the Nextcloud Server code.
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":">= 5.2.0-beta.1, < 5.5.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","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:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/nextcloud/mail/commit/c64fcc3b79e0c089b5e1d2e04a07bfa740b2ac09","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/mail/commit/c64fcc3b79e0c089b5e1d2e04a07bfa740b2ac09"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /containers/cna/references/2
{"name":"https://github.com/nextcloud/mail/pull/11740","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/mail/pull/11740"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /containers/cna/references/1
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v394-8gpc-6fv5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v394-8gpc-6fv5"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /containers/cna/references/0
{"name":"https://hackerone.com/reports/3357036","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3357036"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8c9562dc63043377ea2f8e561e805ec73fe7e38bb329b772cd97c46f266aaa92 · sha256:b39cc75cc4453c6a… · /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.