How severe is CVE-2025-63783?

CVE-2025-63783 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2025-63783 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63783?

CVE-2025-63783 affects Onlook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63783?

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-2025-63783 have an EU (EUVD) identifier?

Yes. CVE-2025-63783 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-38272.

When was CVE-2025-63783 published?

CVE-2025-63783 was published on 2025-11-07 and last updated on 2026-06-17.

CVE-2025-63783

CVE-2025-63783 is a high-severity vulnerability in Onlook with a CVSS 3.x base score of 7.6. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-38272
Weakness: CWE-20
Affected product: Onlook
Published: 2025-11-07
Last modified: 2026-06-17

Description

A Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (update, delete, add/remove tag) of the Onlook web application 0.2.32. The vulnerability exists because the API fails to verify the ownership or membership of the currently authenticated user for the requested project ID. An authenticated attacker can send a malicious request containing another user's project ID to unlawfully modify, delete, or manipulate tags on that project, which can severely compromise data integrity and availability.

Frequently asked questions

What is CVE-2025-63783?: A Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (update, delete, add/remove tag) of the Onlook web application 0.2.32. The vulnerability exists because the API fails to verify the ownership or membership of the currently authenticated user for the requested project ID. An authenticated attacker can send a malicious request containing another user's project ID to unlawfully modify, delete, or manipulate tags on that project, which can severely compromise data integrity and availability.
How severe is CVE-2025-63783?: CVE-2025-63783 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2025-63783 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63783?: CVE-2025-63783 affects Onlook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63783?: 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-2025-63783 have an EU (EUVD) identifier?: Yes. CVE-2025-63783 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-38272.
When was CVE-2025-63783 published?: CVE-2025-63783 was published on 2025-11-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:onlook:onlook:0.2.32:*:*:*:*:*:*:*

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