Secuno
ENNL
Book demo

CVE-2026-54353

Budibase server-side request forgery (SSRF)

8.5 HIGHPublic exploitEPSS 0.21%
  1. Published26 Jun 2026

Description

Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase's SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected products

Budibase< 3.39.9

Remediation

Fixed in
Budibase≥ 3.39.9

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-8911110.0
The SAP Cloud SDK for Python contains an OAuth2 SSRF vulnerability affecting…
CVE-2026-571438.8
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.62,…
CVE-2026-1092388.6
Crawl4AI 0.7.0 before 0.9.4 contains a server-side request forgery vulnerability that…
CVE-2026-859528.5
Affected Linux-based Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x…
CVE-2026-859518.5
Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7…
CVE-2026-694359.6
Missing authorization in Azure SRE Agent allows an authorized attacker to elevate…

Frequently asked

Is CVE-2026-54353 being actively exploited?

CVE-2026-54353 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.21%.

How severe is CVE-2026-54353?

CVE-2026-54353 has a CVSS 3.1 base score of 8.5, rated high. EPSS estimates a 0.21% probability of exploitation.

Which products are affected by CVE-2026-54353?

Affected products include Budibase.

How do I fix CVE-2026-54353?

Upgrade affected software to a fixed version, for example Budibase 3.39.9 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-54353 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.