Detections
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SCA: security update for CefSharp.Common (GHSA-85jm-cwp2-mvpv)

medium Tenable Cloud Security Plugin ID 444136

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-48796)

Solution

Update the CefSharp.Common library and its related packages to version 148.0.90 or later.

See Also

https://github.com/advisories/GHSA-85jm-cwp2-mvpv

Plugin Details

Severity: Medium

ID: 444136

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/30/2026

Updated: 8/19/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-48796

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 6/30/2026

Reference Information

CVE: CVE-2026-48796

cwe: CWE-22