CVE-2026-34590 identifies a blind Server-Side Request Forgery (SSRF) vulnerability in Postiz AI social media scheduling tool versions prior to 2.21.4. This flaw allows authenticated users to create webhooks with internal network addresses due to inadequate URL validation on the POST /webhooks/ endpoint. Rated Medium with a CVSS score of 5.4, this vulnerability could enable an attacker with low privileges to trigger requests to internal services, potentially leading to limited information disclosure or integrity compromise. There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.21.4CPE matchmatch criteria | cpe:2.3:a:gitroom:postiz:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.