Missing Authorization Vulnerability in JeecgBoot Affecting Low-Priority Users
CVE-2026-108677

7.1HIGH

Key Information:

Vendor

Jeecgboot

Status
Jeecgboot
Vendor
CVE Published:
10 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-108677?

JeecgBoot, up to version 3.9.5, suffers from a vulnerability that allows low-privileged authenticated users to exploit the GET /sys/api/getUserByName endpoint. This flaw enables unauthorized access to retrieve any user's stored password. Attackers can leverage the hard-coded key found in /sys/getEncryptedString to decrypt AES-CBC protected responses, gaining access to ciphertexts of administrators’ passwords, which can then be used for offline guessing attacks.

Affected Version(s)

JeecgBoot 0 <= 3.9.5

References

https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1...
exploit
https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe19...
technical-description
https://www.vulncheck.com/advisories/jeecgboot-through-3....
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yaqi Chao
.