Detections
Analytics

SCA: security update for flask (GHSA-m2qf-hxjv-5gpq)

high Tenable Self-Hosted Container Security Plugin ID 416662

Description

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

 - Flask is a lightweight WSGI web application framework. When all of the following conditions are met, a
 response containing data intended for one client may be cached and subsequently sent by the proxy to other
 clients. If the proxy also caches `Set-Cookie` headers, it may send one client's `session` cookie to other
 clients. The severity depends on the application's use of the session and the proxy's behavior regarding
 cookies. The risk depends on all these conditions being met. 1. The application must be hosted behind a
 caching proxy that does not strip cookies or ignore responses with cookies. 2. The application sets
 `session.permanent = True` 3. The application does not access or modify the session at any point during a
 request. 4. `SESSION_REFRESH_EACH_REQUEST` enabled (the default). 5. The application does not set a
 `Cache-Control` header to indicate that a page is private or should not be cached. This happens because
 vulnerable versions of Flask only set the `Vary: Cookie` header when the session is accessed or modified,
 not when it is refreshed (re-sent to update the expiration) without being accessed or modified. This issue
 has been fixed in versions 2.3.2 and 2.2.5. (CVE-2023-30861)

See Also

https://github.com/advisories/GHSA-m2qf-hxjv-5gpq

Plugin Details

Severity: High

ID: 416662

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.51

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2023-30861

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 8.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/1/2023

Vulnerability Publication Date: 5/1/2023

Reference Information

CVE: CVE-2023-30861

cwe: CWE-539