What is CVE-2026-31816?

CVE-2026-31816 is a critical-severity vulnerability in Budibase, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.1/10. Published 2026-03-09.

How severe is CVE-2026-31816?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2026-31816 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Budibase

CVE-2026-31816

Budibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized() middleware that protects every server-side API endpoint can be completely bypassed by appen…

EPSS: 0.169 (95.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Budibase — versions <= 3.31.4

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

imjdl/CVE-2026-31816-rshell

References

https://github.com/Budibase/budibase/security/advisories/GHSA-gw94-hprh-4wj8 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-31816?: CVE-2026-31816 is a critical-severity vulnerability in Budibase, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.1/10. Published 2026-03-09.
How severe is CVE-2026-31816?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2026-31816 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.