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.NET NuGet

GHSA-f87w-3j5w-v58p

HIGH

CefSharp affected by incorrect handle provided in unspecified circumstances in Mojo on Windows

Published
Apr 12, 2025
Updated
Apr 12, 2025
Affected
7 pkgs
Patched
7 / 7
Exploits
None indexed

Blast Radius

7 pkgs affected
.NETCefSharp.Wpf.NETCefSharp.Wpf.HwndHost.NETCefSharp.Wpf.NetCore.NETCefSharp.WinForms.NETCefSharp.WinForms.NetCore.NETCefSharp.OffScreen.NetCore.NETCefSharp.OffScreen

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

Incorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file. (Chromium security severity: High)

https://nvd.nist.gov/vuln/detail/CVE-2025-2783 https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_25.html https://issues.chromium.org/issues/405143032

Affected Packages

7 total 7 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetCefSharp.Wpfall versions134.3.90
.NETNuGetCefSharp.Wpf.HwndHostall versions134.3.90
.NETNuGetCefSharp.Wpf.NetCoreall versions134.3.90
.NETNuGetCefSharp.WinFormsall versions134.3.90
.NETNuGetCefSharp.WinForms.NetCoreall versions134.3.90
.NETNuGetCefSharp.OffScreen.NetCoreall versions134.3.90

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for CefSharp.Wpf. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update CefSharp.Wpf to 134.3.90 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f87w-3j5w-v58p is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-f87w-3j5w-v58p is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-f87w-3j5w-v58p. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Incorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file. (Chromium security severity: High) https://nvd.nist.gov/vuln/detail/CVE-2025-2783 https://chromereleases.googleblog.com/2025/03/stable-channel-update-for-desktop_25.html https://issues.chromium.org/issues/405143032
O3 Security · Impact-Aware SCA

Is GHSA-f87w-3j5w-v58p in your dependencies?

O3 detects GHSA-f87w-3j5w-v58p across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.