XSS in Xpf0000 Flyenv
CVE-2026-69116
FlyEnv before 4.18.0 fails to sanitize HTML from markdown rendering and AI chat content passed to Vue v-html directives. Attackers can inject malicious scripts through markdown sources or chat messages that execute in the Electron renderer process with access to Node.js APIs and the filesystem.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Xpf0000 Flyenv — versions 0, 4.18.0
Weakness classification (CWE)
References
- github.com/xpf0000/FlyEnv/issues/809 (issue-tracking, technical-description, exploit)
- github.com/xpf0000/FlyEnv/releases/tag/v4.18.0 (release-notes)
- github.com/xpf0000/FlyEnv/pull/810 (issue-tracking, patch)
- github.com/xpf0000/FlyEnv/commit/68fd6d7b200273ad0a8bce09424b8bd87134cfb6 (patch)
- www.vulncheck.com/advisories/flyenv-cross-site-scripting-via-v-html (third-party-advisory)
Frequently asked questions
- What is CVE-2026-69116?
- CVE-2026-69116 is a medium-severity vulnerability in Xpf0000 Flyenv, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-10.
- How severe is CVE-2026-69116?
- Medium severity. CVSS v3 base score is 6.1 out of 10.