CVE-2026-49473
Authorization bypass in @cedar-policy Express middleware via query-string/path mismatch
Is CVE-2026-49473 being exploited?
Not confirmed. CVE-2026-49473 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.28% probability of exploitation in the next 30 days.
How severe is CVE-2026-49473?
CVE-2026-49473 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-49473?
Yes. A fix has been recorded for CVE-2026-49473. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-49473 affect?
CVE-2026-49473 affects @cedar-policy/authorization-for-expressjs <0.3.0, Node.js Express applications using Cedar authorization middleware. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-49473?
Upgrade to >=0.3.0; validate/sanitize request paths and use req.path for auth checks
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authorization bypass: attacker appends query string to cause middleware to match a less-restrictive action and access restricted endpoints.
Patch when possible
- affected< 0.3.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.