Workspace Isolation Bypass in Jpom Product by Dromara
CVE-2026-91993

5.3MEDIUM

Key Information:

Vendor

Dromara

Status
Jpom
Vendor
CVE Published:
15 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-91993?

Jpom prior to version 2.11.12 allows authenticated users to bypass workspace isolation restrictions. The vulnerability occurs due to improper validation of workspace ownership when accessing the /build/branch-list endpoint. This flaw allows users to submit repository identifiers from other workspaces, leading to potential unauthorized access to sensitive repository information. Attackers can exploit this issue to enumerate existing repositories, ascertain repository types, and execute git ls-remote commands using stored credentials from different workspaces.

Affected Version(s)

Jpom 0 <= 2.11.12

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-2026-91993 - Proof of Concept

References

https://github.com/dromara/Jpom/issues/115
issue-trackingexploit
https://github.com/dromara/Jpom/blob/v2.11.12/modules/ser...
technical-description
https://github.com/dromara/Jpom
product

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
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

George Chen
.