CVE-2026-19127

MEDIUM 6.5

Insufficient verification of lifetime-deal redemption codes allows forgery of permanent paid subscriptions

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

An issue in the billing and license activation subsystem allows remote attackers to bypass payment authorization workflows. By exploiting insufficient cryptographic validation or lack of server-side state verification on promotional/lifetime-deal (LTD) redemption codes, an unauthenticated attacker can forge valid redemption tokens or replay existing single-use codes to activate permanent, tier-highest paid subscriptions without a financial transaction.

CWE	CWE-345
Vendor	gitroomhq
Product	postiz-app
Published	Aug 6, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

GitroomHQ / postiz-app

0 < 2.21.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/gitroomhq/postiz-app/commit/387d85dabe0223cd930714c19072a0aee58541ca github.com: https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.10 gadvisory.org: https://gadvisory.org/advisories/PSA-2026-NWZN9J

Credits

🔍 Enno Gelhaus Enno Gelhaus Nevo David