CVE-2026-31818: Budibase is an open-source low-code platform

Q: How do I fix CVE-2026-31818?

budibase: upgrade to 3.33.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-31818 being exploited?

CVE-2026-31818 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-31818 affect?

CVE-2026-31818 affects budibase. Severity is critical (CVSS 9.6). Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered co

Q: How urgent is CVE-2026-31818?

Priority 46/100. Critical severity; Public exploit reference

This month

CRITICAL 9.6UPGRADE

CVE-2026-31818 is a critical-severity flaw (CVSS 9.6) affecting budibase. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered completely ineffective because the BLACKLIST_IPS environment variable is not set by default in any of the official deployment configurations. When this variable is empty, the blacklist function unconditionally re

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-918, CWE-1188
Published	2026-04-03
Last modified	2026-10-06

Publisher (CNA): GitHub, Inc. · Vendor: budibase

Last updated 2026-10-06 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-03 16:16 UTCPublished CVE record published
2026-10-06 22:10 UTCUpdated Record last modified

budibase budibase UPGRADE

Affected: < 3.33.4

Fixed in: 3.33.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy budibase || rpm -q budibase || budibase --version

2. UPGRADE to 3.33.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade budibase

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade budibase

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-31818?

budibase: upgrade to 3.33.4. Exact commands for each OS are on this page.

Is CVE-2026-31818 being exploited?

CVE-2026-31818 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-31818 affect?

CVE-2026-31818 affects budibase. Severity is critical (CVSS 9.6). Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered co

How urgent is CVE-2026-31818?

Priority 46/100. Critical severity; Public exploit reference

Related CVEs

CVE-2026-33226 HIGH 8.7 UPGRADE Budibase is a low code platform for creating internal tools, workflows, and admin panels
CVE-2026-35216 CRITICAL 9.0 UPGRADE Budibase is an open-source low-code platform
CVE-2026-35214 HIGH 8.7 UPGRADE Budibase is an open-source low-code platform
CVE-2026-25044 HIGH 8.8 UPGRADE Budibase is an open-source low-code platform
CVE-2026-25043 MEDIUM 5.3 UPGRADE Budibase is an open-source low-code platform

References

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