CVE-2026-19127
Insufficient verification of lifetime-deal redemption codes allows forgery of permanent paid subscriptions
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.
INFO
Published Date :
Aug. 6, 2026, 10:16 p.m.
Last Modified :
Aug. 7, 2026, 2:16 p.m.
Remotely Exploit :
No
Source :
4cdc9741-f887-419a-a2fd-acbbd2729276
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 4cdc9741-f887-419a-a2fd-acbbd2729276 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Implement robust cryptographic validation for redemption codes.
- Enforce server-side state verification for all redemptions.
- Ensure single-use codes are properly invalidated.
- Review and update license activation logic.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-19127.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19127 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-19127
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19127 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-19127 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 07, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-19127', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-07T14:02:58.803040Z'} -
New CVE Received by 4cdc9741-f887-419a-a2fd-acbbd2729276
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'GitroomHQ', 'product': 'postiz-app', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.21.10', 'versionType': 'semver'}], 'packageName': 'postiz-app', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Added CWE CWE-345 Added Reference https://gadvisory.org/advisories/PSA-2026-NWZN9J Added Reference https://github.com/gitroomhq/postiz-app/commit/387d85dabe0223cd930714c19072a0aee58541ca Added Reference https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.10