paicoding 1.0.3 contains a payment bypass vulnerability that allows authenticated attackers to unlock paid articles by guessing weak payment confirmation codes. Attackers can start a payment, enumerate roughly 2000 IdUtil.genPayCode counter values, and submit the matching verifyCode to the unauthenticated callback to mark it paid.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Itwanger Subscribe
Paicoding Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/itwanger/paicoding/blob/903adce70309d340f7eec51ec3c80cfe3c8326c1/paicoding-core/src/main/java/com/github/paicoding/forum/core/util/id/IdUtil.java#L54-L61 cve-icon
https://github.com/itwanger/paicoding/blob/903adce70309d340f7eec51ec3c80cfe3c8326c1/paicoding-web/src/main/java/com/github/paicoding/forum/web/front/article/rest/ArticlePayRestController.java#L79-L90 cve-icon
https://github.com/itwanger/paicoding/issues/137 cve-icon
https://vul.yulun.ac.cn/20261112/paicoding/ cve-icon
https://www.vulncheck.com/advisories/paicoding-1.0.3-payment-bypass-via-guessable-codes-in-article-api-pay-callback cve-icon
History

Fri, 13 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Description paicoding 1.0.3 contains a payment bypass vulnerability that allows authenticated attackers to unlock paid articles by guessing weak payment confirmation codes. Attackers can start a payment, enumerate roughly 2000 IdUtil.genPayCode counter values, and submit the matching verifyCode to the unauthenticated callback to mark it paid.
Title paicoding 1.0.3 Payment Bypass via Guessable Codes in /article/api/pay/callback
First Time appeared Itwanger
Itwanger paicoding
Weaknesses CWE-334
CPEs cpe:2.3:a:itwanger:paicoding:1.0.3:*:*:*:*:*:*:*
Vendors & Products Itwanger
Itwanger paicoding
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-13T17:22:06.792Z

Reserved: 2026-11-13T16:38:47.488Z

Link: CVE-2026-129144

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses