CVE-2026-61740
Unauthenticated API-key bypass in LightRAG <1.5.4 allowing guest JWT issuance.
Is CVE-2026-61740 being exploited?
Not confirmed. CVE-2026-61740 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 0.66% probability of exploitation in the next 30 days.
How severe is CVE-2026-61740?
CVE-2026-61740 is rated Critical with a CVSS score of 9.3. 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-2026-61740?
Yes. A fix has been recorded for CVE-2026-61740. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-61740 affect?
CVE-2026-61740 affects LightRAG <1.5.4, Deployments with LIGHTRAG_API_KEY set and AUTH_ACCOUNTS unset, Endpoints: /auth-status, /login, combined_auth-protected APIs. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-61740?
Upgrade to LightRAG 1.5.4 and verify AUTH_ACCOUNTS and API key configs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated attacker can bypass X-API-Key, mint guest JWTs, and perform document read/upload/delete, graph mutations, and queries.
Immediate action required
- affected< 1.5.4
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.