Missing Authorization Vulnerability in JeecgBoot by Jeecg
CVE-2026-108639

5.3MEDIUM

Key Information:

Vendor

Jeecgboot

Status
Jeecgboot
Vendor
CVE Published:
10 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-108639?

JeecgBoot version 3.9.5 is susceptible to a missing authorization vulnerability. This flaw permits any authenticated user to execute DELETE requests on the /sys/dict/deletePhysic/{id} endpoint. As a result, they can permanently eliminate data dictionaries and their associated items from the system, circumventing the recycle bin feature. This poses a significant risk as low-privilege attackers can exploit this vulnerability to irreversibly remove critical data.

Affected Version(s)

JeecgBoot 0 <= 3.9.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-108639 - Proof of Concept

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:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
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
.