CefSharp affected by heap buffer overflow in WebP
Google is aware that an exploit for CVE-2023-4863 exists in the wild.
Description
Heap buffer overflow in WebP in Google Chrome prior to 116.0.5845.187 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)
References
- https://www.cve.org/CVERecord?id=CVE-2023-4863
- https://nvd.nist.gov/vuln/detail/CVE-2023-4863
- https://www.techtarget.com/searchsecurity/news/366551978/Browser-companies-patch-critical-zero-day-vulnerability
Updated
There is another related security vulnerability.
There's another related CVE (CVE-2023-5217) that is fixed in Chromium 117.0.5938.132. This one is triggered by WebCodecs API encoder usage, so a workaround for older versions is to disable the WebCodecs API (
--disable-blink-features=WebCodecs).
As per https://magpcss.org/ceforum/viewtopic.php?f=6&t=19551#p54150
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | CefSharp.Common | < 116.0.230 | 116.0.230 |
| .NET (NuGet) | CefSharp.Common.NETCore | < 116.0.230 | 116.0.230 |
References
- Weakness (CWE)
-- Platform
- .NET (NuGet)
- Package
CefSharp.Common, CefSharp.Common.NETCore- Disclosed
- 21.09.2023
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-j646-gj5p-p45g - CC BY 4.0
Vulnerability history: CefSharp.Common.NETCore
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 02.2022 10.2023
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- Critical 1
- High 2
Disclosures per year
- 2022: 1
- 2023: 2
- 2024: 0
- 2025: 0
- 2026: 0
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CefSharp affected by heap buffer overflow in WebP this entry
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