CVE-2026-108677

MEDIUM 6.5

JeecgBoot through 3.9.5 Missing Authorization via /sys/api/getUserByName

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

JeecgBoot through 3.9.5 contains a missing authorization vulnerability in GET /sys/api/getUserByName that allows low-privileged authenticated users to retrieve any user's stored password value. Attackers can decrypt the AES-CBC protected response using the hard-coded key exposed by /sys/getEncryptedString to obtain administrators' password ciphertexts for offline guessing.

CWE	CWE-862
Vendor	jeecgboot
Product	jeecgboot
Published	Oct 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

jeecgboot / JeecgBoot

0 ≤ 3.9.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_sys_api_credential_family.py github.com: https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/api/controller/SystemApiController.java#L100-L110 vulncheck.com: https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-sys-api-getuserbyname

Credits

Yaqi Chao