What’s Vulnerable › Vulnerabilities

CVE-2026-19127: Insufficient verification of lifetime-deal redemption codes allows forgery of permanent paid subscriptions

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-23
• Weakness: CWE-345

Description

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.

Affected products

• gitroomhq postiz-app: before 2.21.10 — fixed in 2.21.10

How to fix

Upgrade to a fixed version: gitroomhq postiz-app 2.21.10. Check the vendor advisory for mitigations.

References

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

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