Vulnerability record
CVE-2026-129139
The short answer
CVE-2026-129139 affects itwanger paicoding and is rated high (CVSS 8.8). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.26%.
What it is
paicoding from commit b8206b9 through commit 903adce uses predictable credentials for accounts created via ZSXQ login, because loginByZsxq derives both the username and password solely from the member's ZSXQ number. Unauthenticated attackers can read that number from the victim's /user/{userId} profile page, compute the credentials, and log in via /login/username to take over the account.
Weakness: CWE-1391.
Severity
8.8 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.26%
Higher than 18% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- None
- User interaction
- None
- Confidentiality impact
- High
- Integrity impact
- Low
- Availability impact
- None
Affected products
paicoding. NVD's record lists the exact affected versions.
References
- github.com/itwanger/paicoding/blob/903adce70309d340f7eec51ec3c80cfe3c8326c1/paicoding-service/src/main/java/com/github/paicoding/forum/service/user/service/user/LoginServiceImpl.java#L244-L250
- github.com/itwanger/paicoding/blob/903adce70309d340f7eec51ec3c80cfe3c8326c1/paicoding-ui/src/main/resources/templates/views/user/info/edit.html#L81-L90
- github.com/itwanger/paicoding/issues/137
- vul.yulun.ac.cn/20261112/paicoding/
- www.vulncheck.com/advisories/paicoding-commit-b8206b9-through-903adce-predictable-zsxq-account-credentials
Questions
Is CVE-2026-129139 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-14. FIRST's EPSS estimates a 0.26% chance of exploitation in the next 30 days.
How do I fix CVE-2026-129139?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Received. The description is NVD's text, quoted as published.
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