CVE-2025-63785: A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the text editor feature of the Onlook web appli

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-63785 is a medium-severity flaw (CVSS 6.1) affecting onlook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the text editor feature of the Onlook web application 0.2.32. This vulnerability occurs because user-supplied input is not properly sanitized before being directly injected into the DOM via innerHTML when editing a text element. An attacker can exploit this to inject malicious HTML and script code, which is then executed within the context of the preview iframe, allowing for the execu

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-20, CWE-79, CWE-116
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 17:15 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-2025-63785?

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

Is CVE-2025-63785 being exploited?

CVE-2025-63785 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-2025-63785 affect?

CVE-2025-63785 affects onlook. Severity is medium (CVSS 6.1). A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the text editor feature of the Onlook web application 0.2.32. This vulnerability occurs because user-supplied input is not properly sanitized before being directly injected into

How urgent is CVE-2025-63785?

Priority 32/100. Public exploit reference

Related CVEs

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
CVE-2025-63783 HIGH 7.6 DOWNGRADE A Broken Object Level Authorization (BOLA) vulnerability was discovered in the tRPC project mutation APIs (upd

References

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