CVE-2026-40168

HIGH
MEDIUM Priority: 0.03 BB Relevance: 76/100
Published: 2026-04-10 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: None
A: Low

Description

Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
gitroom postiz < 2.21.5

Bug Bounty Relevance

76 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.2 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

EPSS — Exploitation Probability

0.37%
Raw Score 0.003710
Percentile 31.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00371
2026-10-28
0.00371

Intelligence Sources

nvd ref →