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SCA: security update for github.com/envoyproxy/envoy (GHSA-rj35-4m94-77jh)

medium Tenable Cloud Security Plugin ID 436268

Description

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

 - Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier,
 when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before
 issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwarding proxy
 upstream from Envoy then responds with a non-2xx status, this can cause a de-synchronized CONNECT tunnel
 state. By default Envoy continues to allow early CONNECT data to avoid disrupting existing deployments.
 The envoy.reloadable_features.reject_early_connect_data runtime flag can be set to reject CONNECT requests
 that send data before a 2xx response when intermediaries upstream from Envoy may reject establishment of a
 CONNECT tunnel. (CVE-2025-64763)

See Also

https://github.com/advisories/GHSA-rj35-4m94-77jh

Plugin Details

Severity: Medium

ID: 436268

Version: Revision 1.12

Type: Local

Family: SCA Checks

Published: 12/5/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2025-64763

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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: 12/5/2025

Vulnerability Publication Date: 12/3/2025

Reference Information

CVE: CVE-2025-64763

cwe: CWE-693