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SCA: security update for github.com/oauth2-proxy/oauth2-proxy/v7 (GHSA-vjrc-mh2v-45x6)

high Tenable Self-Hosted Container Security Plugin ID 436026

Description

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

 - OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware
 component integrated into existing reverse proxy or load balancer setups. In versions prior to 7.13.0, all
 deployments of OAuth2 Proxy in front of applications that normalize underscores to dashes in HTTP headers
 (e.g., WSGI-based frameworks such as Django, Flask, FastAPI, and PHP applications). Authenticated users
 can inject underscore variants of X-Forwarded-* headers that bypass the proxy’s filtering logic,
 potentially escalating privileges in the upstream app. OAuth2 Proxy authentication/authorization itself is
 not compromised. The problem has been patched with v7.13.0. By default all specified headers will now be
 normalized, meaning that both capitalization and the use of underscores (_) versus dashes (-) will be
 ignored when matching headers to be stripped. For example, both `X-Forwarded-For` and `X_Forwarded-for`
 will now be treated as equivalent and stripped away. For those who have a rational that requires keeping a
 similar looking header and not stripping it, the maintainers introduced a new configuration field for
 Headers managed through the AlphaConfig called `InsecureSkipHeaderNormalization`. As a workaround, ensure
 filtering and processing logic in upstream services don't treat underscores and hyphens in Headers the
 same way. (CVE-2025-64484)

See Also

https://github.com/advisories/GHSA-vjrc-mh2v-45x6

Plugin Details

Severity: High

ID: 436026

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 11/13/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.77

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2025-64484

CVSS v3

Risk Factor: High

Base Score: 8.5

Temporal Score: 7.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/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: 11/12/2025

Vulnerability Publication Date: 11/10/2025

Reference Information

CVE: CVE-2025-64484

cwe: CWE-644