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SCA: security update for github.com/oauth2-proxy/oauth2-proxy/v7 (GHSA-c5c4-8r6x-56w3)

medium Tenable Self-Hosted Container Security Plugin ID 440450

Description

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

 - OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Prior to 7.15.2, an
 authorization bypass exists in OAuth2 Proxy as part of the email_domain enforcement option. An attacker
 may be able to authenticate with an email claim such as [email protected]@company.com and satisfy an
 allowed domain check for company.com, even though the claim is not a valid email address. The issue ONLY
 affects deployments that rely on email_domain restrictions and accept email claim values from identity
 providers or claim mappings that do not strictly enforce normal email syntax. This vulnerability is fixed
 in 7.15.2. (CVE-2026-40574)

Solution

Update the github.com/oauth2-proxy/oauth2-proxy/v7 library and its related packages to version 7.15.2 or later.

See Also

https://github.com/advisories/GHSA-c5c4-8r6x-56w3

Plugin Details

Severity: Medium

ID: 440450

Version: Revision 1.12

Type: Local

Family: SCA Checks

Published: 4/16/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.59

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-40574

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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: 4/15/2026

Vulnerability Publication Date: 4/15/2026

Reference Information

CVE: CVE-2026-40574

cwe: CWE-863