How severe is CVE-2026-35218?

CVE-2026-35218 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-35218 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35218?

CVE-2026-35218 affects Budibase. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35218?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-35218 have an EU (EUVD) identifier?

Yes. CVE-2026-35218 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18797.

When was CVE-2026-35218 published?

CVE-2026-35218 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-35218

CVE-2026-35218 is a high-severity vulnerability in Budibase with a CVSS 3.x base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 8.7)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18797
Weakness: CWE-79
Affected product: Budibase
Published: 2026-04-03
Last modified: 2026-06-17

Description

Budibase is an open-source low-code platform. Prior to version 3.32.5, Budibase's Builder Command Palette renders entity names (tables, views, queries, automations) using Svelte's {@html} directive without any sanitization. An authenticated user with Builder access can create a table, automation, view, or query whose name contains an HTML payload (e.g. <img src=x onerror=alert(document.domain)>). When any Builder-role user in the same workspace opens the Command Palette (Ctrl+K), the payload executes in their browser, stealing their session cookie and enabling full account takeover. This issue has been patched in version 3.32.5.

Frequently asked questions

What is CVE-2026-35218?: Budibase is an open-source low-code platform. Prior to version 3.32.5, Budibase's Builder Command Palette renders entity names (tables, views, queries, automations) using Svelte's {@html} directive without any sanitization. An authenticated user with Builder access can create a table, automation, view, or query whose name contains an HTML payload (e.g. <img src=x onerror=alert(document.domain)>). When any Builder-role user in the same workspace opens the Command Palette (Ctrl+K), the payload executes in their browser, stealing their session cookie and enabling full account takeover. This issue has been patched in version 3.32.5.
How severe is CVE-2026-35218?: CVE-2026-35218 has a CVSS 3.x base score of 8.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-35218 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35218?: CVE-2026-35218 affects Budibase. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35218?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-35218 have an EU (EUVD) identifier?: Yes. CVE-2026-35218 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18797.
When was CVE-2026-35218 published?: CVE-2026-35218 was published on 2026-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:*

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