CVE-2025-63783: A Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (upd

Routine

HIGH 7.6DOWNGRADE

CVE-2025-63783 is a high-severity flaw (CVSS 7.6) affecting onlook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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,

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-20
Published	2025-11-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: onlook

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-07 16:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

onlook onlook DOWNGRADE

Affected: 0.2.32

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.32

1. Check installed version

apt-cache policy onlook || rpm -q onlook || onlook --version

2. No fixed release: DOWNGRADE to a release before 0.2.32 (Debian / Ubuntu)

apt-cache madison onlook sudo apt install onlook=<VERSION_BEFORE_0.2.32> sudo apt-mark hold onlook

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list onlook sudo dnf downgrade onlook-<VERSION_BEFORE_0.2.32> sudo dnf versionlock add onlook

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-63783?

onlook: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-63783 being exploited?

CVE-2025-63783 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-63783 affect?

CVE-2025-63783 affects onlook. Severity is high (CVSS 7.6). 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 ow

How urgent is CVE-2025-63783?

Priority 38/100. High severity; Public exploit reference

Related CVEs

CVE-2025-63785 MEDIUM 6.1 DOWNGRADE A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the text editor feature of the Onlook web appli
CVE-2025-63784 MEDIUM 6.5 DOWNGRADE An Open Redirect vulnerability exists in the OAuth callback handler in file onlook/apps/web/client/src/app/aut

References

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