CVE-2023-42820

HIGH

JumpServer 2.24.0-2.28.18 - Exposure of Sensitive Information via Random Seed in API

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2023-42820. PoCs published by C1ph3rX13, Startr4ck.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2023-42820, targeting a password reset vulnerability in an unspecified web application. The exploit automates CAPTCHA bypass, CSRF token extraction, and password reset token manipulation to achieve unauthorized account access.

Description

JumpServer is an open source bastion host. This vulnerability is due to exposing the random number seed to the API, potentially allowing the randomly generated verification codes to be replayed, which could lead to password resets. If MFA is enabled users are not affect. Users not using local authentication are also not affected. Users are advised to upgrade to either version 2.28.19 or to 3.6.5. There are no known workarounds or this issue.

Exploits (2)

nomisec WORKING POC 55 stars
by C1ph3rX13 · poc
https://github.com/C1ph3rX13/CVE-2023-42820

This repository contains a functional exploit for CVE-2023-42820, targeting a password reset vulnerability in an unspecified web application. The exploit automates CAPTCHA bypass, CSRF token extraction, and password reset token manipulation to achieve unauthorized account access.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Unknown (likely a web application with Django-based authentication)
No auth needed
Prerequisites: Network access to the target application · CAPTCHA recognition library (ddddocr) · Valid username/email for the target account
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec SUSPICIOUS 2 stars
by Startr4ck · poc
https://github.com/Startr4ck/cve-2023-42820

The repository lacks functional exploit code and instead provides vague descriptions and external image links. It mentions password reset and shell access but does not include technical details or PoC code.

Classification
Suspicious 80%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Theoretical
Target: JumpServer v2.24 - v3.6.4
No auth needed
Prerequisites: knowledge of admin email
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (2)

Core 2

Scores

CVSS v3 7.0
EPSS 0.0540
EPSS Percentile 91.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (1)
fit2cloud/jumpserver 2.24.0 - 2.28.19
Published Sep 27, 2023
Tracked Since Feb 18, 2026