CVE-2026-72855
Authenticated SSRF via DNS rebinding in Budibase allows access to internal HTTP services.
Is CVE-2026-72855 being exploited?
Not confirmed. CVE-2026-72855 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 0.27% probability of exploitation in the next 30 days.
How severe is CVE-2026-72855?
CVE-2026-72855 is rated High with a CVSS score of 8.4. 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-2026-72855?
Yes. A fix has been recorded for CVE-2026-72855. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-72855 affect?
CVE-2026-72855 affects Budibase server < 3.40.0, OpenAPI query import feature, REST query execution feature, Instances with builder-level users enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-72855?
Upgrade Budibase to >=3.40.0; restrict builder privileges and block internal HTTP access until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated builder-level users can perform SSRF via DNS rebinding to reach internal/loopback HTTP services, enabling data access or internal service interaction.
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.