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4 vulnerabilities found for CefSharp by cefsharp
CVE-2026-48796 (GCVE-0-2026-48796)
Vulnerability from nvd – Published: 2026-08-18 21:17 – Updated: 2026-08-19 18:19
VLAI
EPSS
VEX
Title
CefSharp: `FolderSchemeHandlerFactory` path boundary check can expose files outside the configured root folder
Summary
CefSharp provides .NET bindings for the Chromium Embedded Framework for Windows Forms and Windows Presentation Foundation applications. Prior to version 148.0.90, CefSharp/SchemeHandler/FolderSchemeHandlerFactory.cs used filePath.StartsWith(rootFolder, StringComparison.OrdinalIgnoreCase) to decide whether a decoded and canonicalized request path remained inside rootFolder. That raw prefix test did not enforce a directory boundary, so a request such as ..%2fwww2/secret.txt could escape a configured www directory into a sibling www2 directory whose path shared the same string prefix. Applications that register FolderSchemeHandlerFactory for a custom scheme or an HTTP or HTTPS scheme can therefore serve local files outside the intended root when an attacker can cause the embedded browser to request the crafted URL. The issue affects both Unix-style paths such as /tmp/app/www2 and Windows paths such as C:\app\www2, and the fix appends a directory separator to the normalized root before comparison while rejecting null bytes and alternate data stream syntax. This issue is fixed in version 148.0.90.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 18:03 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cefsharp/CefSharp/security/adv… | x_refsource_CONFIRM |
| https://github.com/cefsharp/CefSharp/commit/3475c… | x_refsource_MISC |
| https://github.com/cefsharp/CefSharp/releases/tag… | x_refsource_MISC |
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CVE-2020-16009 (GCVE-0-2020-16009)
Vulnerability from nvd – Published: 2020-11-03 02:21 – Updated: 2025-10-21 23:35Summary
Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.183 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 16:56 UTC
CWE
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://chromereleases.googleblog.com/2020/11/sta… | x_refsource_MISC |
| https://crbug.com/1143772 | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://packetstormsecurity.com/files/159974/Chrom… | x_refsource_MISC |
| https://security.gentoo.org/glsa/202011-12 | vendor-advisoryx_refsource_GENTOO |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.debian.org/security/2021/dsa-4824 | vendor-advisoryx_refsource_DEBIAN |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
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CVE-2026-48796 (GCVE-0-2026-48796)
Vulnerability from cvelistv5 – Published: 2026-08-18 21:17 – Updated: 2026-08-19 18:19
VLAI
EPSS
VEX
Title
CefSharp: `FolderSchemeHandlerFactory` path boundary check can expose files outside the configured root folder
Summary
CefSharp provides .NET bindings for the Chromium Embedded Framework for Windows Forms and Windows Presentation Foundation applications. Prior to version 148.0.90, CefSharp/SchemeHandler/FolderSchemeHandlerFactory.cs used filePath.StartsWith(rootFolder, StringComparison.OrdinalIgnoreCase) to decide whether a decoded and canonicalized request path remained inside rootFolder. That raw prefix test did not enforce a directory boundary, so a request such as ..%2fwww2/secret.txt could escape a configured www directory into a sibling www2 directory whose path shared the same string prefix. Applications that register FolderSchemeHandlerFactory for a custom scheme or an HTTP or HTTPS scheme can therefore serve local files outside the intended root when an attacker can cause the embedded browser to request the crafted URL. The issue affects both Unix-style paths such as /tmp/app/www2 and Windows paths such as C:\app\www2, and the fix appends a directory separator to the normalized root before comparison while rejecting null bytes and alternate data stream syntax. This issue is fixed in version 148.0.90.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 18:03 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cefsharp/CefSharp/security/adv… | x_refsource_CONFIRM |
| https://github.com/cefsharp/CefSharp/commit/3475c… | x_refsource_MISC |
| https://github.com/cefsharp/CefSharp/releases/tag… | x_refsource_MISC |
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CVE-2020-16009 (GCVE-0-2020-16009)
Vulnerability from cvelistv5 – Published: 2020-11-03 02:21 – Updated: 2025-10-21 23:35Summary
Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.183 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 16:56 UTC
CWE
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://chromereleases.googleblog.com/2020/11/sta… | x_refsource_MISC |
| https://crbug.com/1143772 | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://packetstormsecurity.com/files/159974/Chrom… | x_refsource_MISC |
| https://security.gentoo.org/glsa/202011-12 | vendor-advisoryx_refsource_GENTOO |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.debian.org/security/2021/dsa-4824 | vendor-advisoryx_refsource_DEBIAN |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
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