CVE-2026-46556 | FlaskBB is a Forum Software written in Python using the micr… | CVSS 6.5 MEDIUM

Description

FlaskBB is a Forum Software written in Python using the micro framework Flask. Prior to version 2.2.1, a Server-Side Request Forgery (SSRF) vulnerability in get_image_info() allows any authenticated user to force the server to send HTTP requests to arbitrary internal endpoints, including cloud metadata services. This is a blind SSRF with confirmed internal port scanning and internal API triggering capabilities. Version 2.2.1 patches the issue.

Metadata

CVE ID: CVE-2026-46556
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-14 20:42 UTC
Published: 2026-07-21 20:34 UTC
Last updated: 2026-07-22 14:50 UTC
Primary CWE: CWE-918
CWE-918: Server-Side Request Forgery (SSRF)
Vendor / Product: flaskbb / flaskbb
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
flaskbb	flaskbb	—	< 2.2.1

Weakness (CWE)

CWE	Source	Description
CWE-918	cna	CWE-918: Server-Side Request Forgery (SSRF)

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References (2)

https://github.com/flaskbb/flaskbb/security/advisories/GHSA-xq32-9g7q-7297 https://github.com/flaskbb/flaskbb/security/advisories/GHSA-xq32-9g7q-7297
https://github.com/flaskbb/flaskbb/commit/e87e585f54bbe36694e91d52ee9b2d2e65dd4ab5 https://github.com/flaskbb/flaskbb/commit/e87e585f54bbe36694e91d52ee9b2d2e65dd4ab5