Auth bypass in Mayswind Ezbookkeeping
CVE-2026-105131
ezBookkeeping 1.2.0 before 2.0.1 contains a privilege escalation vulnerability that allows attackers holding an API token to obtain a full session token via /api/v1/tokens/refresh.json. Because TokenRefreshHandler never checks token type, attackers can exchange short-lived or IP-restricted API tokens for 30-day normal session tokens that bypass API token expiry and allowlists.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/mayswind/ezbookkeeping/security/advisories/GHSA-wq25-mpcf-2mfc (vendor-advisory)
- github.com/mayswind/ezbookkeeping/commit/9a92b07be8a7034665abfdb35b036210a1d57b… (patch)
- github.com/mayswind/ezbookkeeping/releases/tag/v2.0.1 (release-notes)
- github.com/mayswind/ezbookkeeping/blob/v2.0.0/pkg/api/tokens.go (technical-description)
- github.com/mayswind/ezbookkeeping (product)
- www.vulncheck.com/advisories/mayswind-ezbookkeeping-1.2.0-before-2.0.1-privileg… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-105131?
- CVE-2026-105131 is a medium-severity vulnerability in Mayswind Ezbookkeeping, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-10-04.
- How severe is CVE-2026-105131?
- Medium severity. CVSS v3 base score is 5.4 out of 10.