How severe is CVE-2026-48153?

CVE-2026-48153 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-48153 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-48153?

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-2026-48153 have an EU (EUVD) identifier?

Yes. CVE-2026-48153 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32587.

When was CVE-2026-48153 published?

CVE-2026-48153 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-48153

CVE-2026-48153 is a high-severity vulnerability with a CVSS 3.x base score of 8.5. 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-918.

Key facts

Severity: High (CVSS 3.x base score 8.5)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32587
Weakness: CWE-918
Published: 2026-05-27
Last modified: 2026-06-17

Description

Budibase is an open-source low-code platform. Prior to 3.39.0, fetchToken in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the blacklist.isBlacklisted check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. This vulnerability is fixed in 3.39.0.

Frequently asked questions

What is CVE-2026-48153?: Budibase is an open-source low-code platform. Prior to 3.39.0, fetchToken in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the blacklist.isBlacklisted check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. This vulnerability is fixed in 3.39.0.
How severe is CVE-2026-48153?: CVE-2026-48153 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-48153 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-48153?: 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-2026-48153 have an EU (EUVD) identifier?: Yes. CVE-2026-48153 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32587.
When was CVE-2026-48153 published?: CVE-2026-48153 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://github.com/Budibase/budibase/security/advisories/GHSA-4q6h-8p4v-67vq

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