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

Quick assessment

Affected
GitroomHQ postiz-app
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Gitroom Postiz是Gitroom组织的一个支持内容创作、定时发布、数据分析和团队协作的社交媒体管理平台。 Gitroom Postiz 2.21.10之前版本存在输入验证错误漏洞，该漏洞源于计费和许可证激活子系统对促销/终身优惠兑换码的加密验证不足或缺乏服务端状态验证，攻击者可伪造有效兑换令牌或重放现有的一次性代码，绕过支付授权流程，激活永久最高等级付费订阅。

CVSS 6.5 · Medium EPSS 0.31% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
GitroomHQ postiz-app < 2.21.10 affected
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I. Basic Information for CVE-2026-19127

Vulnerability Information
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Vulnerability Title
Insufficient verification of lifetime-deal redemption codes allows forgery of permanent paid subscriptions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Gitroom Postiz 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gitroom Postiz是Gitroom组织的一个支持内容创作、定时发布、数据分析和团队协作的社交媒体管理平台。 Gitroom Postiz 2.21.10之前版本存在输入验证错误漏洞，该漏洞源于计费和许可证激活子系统对促销/终身优惠兑换码的加密验证不足或缺乏服务端状态验证，攻击者可伪造有效兑换令牌或重放现有的一次性代码，绕过支付授权流程，激活永久最高等级付费订阅。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitroomHQ postiz-app 0 ~ 2.21.10 -

II. Public POCs for CVE-2026-19127

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III. Intelligence Information for CVE-2026-19127

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Patches & Fixes for CVE-2026-19127 (1)

Vendor Advisories for CVE-2026-19127 (1)

Other References for CVE-2026-19127 (1)

IV. Related Vulnerabilities

Same product: postiz-app
Same vendor: GitroomHQ
Same weakness: CWE-345

V. Comments for CVE-2026-19127

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