CVE-2026-73410
DNS rebinding in Budibase allows SSRF and arbitrary REST calls; fixed in 3.40.0
Is CVE-2026-73410 being exploited?
Not confirmed. CVE-2026-73410 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 0.17% probability of exploitation in the next 30 days.
How severe is CVE-2026-73410?
CVE-2026-73410 is rated High with a CVSS score of 8.5. 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-2026-73410?
Yes. A fix has been recorded for CVE-2026-73410. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73410 affect?
CVE-2026-73410 affects Budibase server/back-end versions prior to 3.40.0, packages/backend-core, packages/server integrations. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73410?
Upgrade Budibase to 3.40.0 or later immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
DNS rebinding/SSRF lets attacker make server requests to internal hosts, read responses, and invoke arbitrary REST methods.
Immediate action required
- affected< 3.40.0
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.