CVE-2025-6705 Privilege escalation in Eclipse Open VSX Registry
Attackers could exploit build script isolation flaws to obtain privileged tokens and publish unauthorized extensions under any namespace.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-6705?
CVE-2025-6705 is a high-severity vulnerability in Eclipse Open VSX Registry, published on 27 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in the Eclipse Open VSX Registry’s automated publishing system could have allowed unauthorized uploads of extensions. Specifically, the system’s build scripts were executed without proper isolation, potentially exposing a privileged token. This token enabled the publishing of new extension versions under any namespace, including those not controlled by an attacker. However, it did not permit deletion of existing extensions, overwriting of published versions, or access to administrative features of the registry.
The issue was reported on May 4, 2025, fully resolved by June 24, and followed by a comprehensive audit. No evidence of compromise was found, though 81 extensions were proactively deactivated as a precaution. The standard publishing process remained unaffected. Recommendations have been issued to mitigate similar risks in the future.
Which versions are affected by CVE-2025-6705?
It affects 1 product.
Products include Eclipse Open Vsx.
How do I fix CVE-2025-6705?
No fix has been published for CVE-2025-6705 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-6705 being exploited?
There is no known exploitation of CVE-2025-6705 in the wild and no public exploit code.
Other vulnerabilities in Eclipse Open VSX Registry
Sources
Also known as GHSA-wrfh-r93c-gw3f.