CVE-2026-39943
MEDIUMCVE-2026-39943 is a medium-severity (CVSS 6.5) Information Exposure vulnerability in directus. O3 Security confirms whether CVE-2026-39943 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Directus exposes sensitive fields in revision history
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
directusnpmDescription
Directus is a real-time API and App dashboard for managing SQL database content. Prior to 11.17.0, Directus stores revision records (in directus_revisions) whenever items are created or updated. Due to the revision snapshot code not consistently calling the prepareDelta sanitization pipeline, sensitive fields (including user tokens, two-factor authentication secrets, external auth identifiers, auth data, stored credentials, and AI provider API keys) could be stored in plaintext within revision records. This vulnerability is fixed in 11.17.0.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | directus | all versions | 11.17.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for directus. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update directus to 11.17.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-39943 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2026-39943 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2026-39943. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-39943 in your dependencies?
O3 detects CVE-2026-39943 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.