TI-2026-32909 Aliases CVE-2026-45061 GHSA-xh5j-727m-w6gg

Budibase: SSRF via trivial `.tar.gz` substring bypass in Plugin URL upload (`/api/plugin`)

HIGH 67CWE-918Published 2026-05-27 · Updated 2026-05-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

Summary

Budibase is an open-source low-code platform. Prior to 3.35.10, the Plugin URL upload endpoint (POST /api/plugin) validates the submitted URL with a single substring check: url.includes(".tar.gz"). Any URL containing .tar.gz anywhere in the string — in the path, query string, or fragment — passes this check. The URL then proceeds directly to fetchWithBlacklist() with no further validation of host, scheme, or path. Standalone, this vulnerability is blocked by Budibase's default SSRF blacklist, which covers private IP ranges. But the URL validation layer itself is broken regardless, and it directly enables SSRF in two realistic situations: (1) when chained with the BLACKLIST_IPS bypass ([001]), where the blacklist is empty; and (2) when the plugin server follows HTTP redirects from an external URL to an internal target (the default node-fetch behavior with redirect: 'follow'). This vulnerability is fixed in 3.35.10.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00263 18th percentileScored 2026-11-07

Fix Fixed budibase (Budibase): 3.35.10budibase (npm): 3.35.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Budibase	budibase	before 3.35.10	3.35.10	Patch available	CNA
—	budibase (npm)	before 3.35.10	3.35.10	Patch available	GHSA-xh5j-727m-w6gg

budibase VendorBudibase Affected before 3.35.10 Fixed in 3.35.10 Patch available CNA
budibase (npm) Vendor— Affected before 3.35.10 Fixed in 3.35.10 Patch available GHSA-xh5j-727m-w6gg

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:budibase:budibase::::::::	—	—	Budibase

cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:* Versions — — ·Budibase

Remediation

Fix · CNA budibase (Budibase) Fixed in 3.35.10
Fix · GHSA-xh5j-727m-w6gg budibase (npm) Fixed in 3.35.10 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-45061
2026-10-03 Alias added: GHSA-xh5j-727m-w6gg
2026-11-05 1 new reference · GHSA-xh5j-727m-w6gg

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-45061

Other 3

TI-2026-39242 Budibase: Anonymous NoSQL operator injection via published-app query templates CVSS 3.1CRITICAL 10.0
TI-2026-51076 Budibase before 3.40.0 SQL Injection via Unauthenticated Webhook CVSS 4.0CRITICAL 9.0
TI-2026-24369 Budibase Universal Auth Bypass via Webhook Query Param Injection CVSS 3.1CRITICAL 9.1
TI-2026-56709 Budibase before 3.41.3 Remote Code Execution via Plugin eval() CVSS 4.0CRITICAL 9.4
TI-2026-51425 Budibase: SQL Injection via `multipleStatements: true` CVSS 3.1CRITICAL 9.6
TI-2026-51075 Budibase before 3.40.0 Arbitrary File Write via Path Traversal CVSS 4.0CRITICAL 9.4

See all 90 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences