CVE-2024-50640Public exploitNetwork attack vector

Unauthenticated backend access via semicolon path bypass

Published Aug 20, 2025 · Updated Aug 21, 2025

Authentication bypass in jeewx-boot 1.3 allows remote attackers to access protected backend APIs without a token via crafted URLs. The LoginInterceptor.preHandle method tests the raw request URI for the literal /back/ segment; inserting a semicolon defeats that match while routing still reaches the protected handler. No authentication or user interaction is required, and the demonstrated backend endpoint returns user information to an unauthenticated request.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in jeewx-boot 1.3 allows remote attackers to access protected backend APIs without a token via crafted URLs. The LoginInterceptor.preHandle method tests the raw request URI for the literal /back/ segment; inserting a semicolon defeats that match while routing still reaches the protected handler. No authentication or user interaction is required, and the demonstrated backend endpoint returns user information to an unauthenticated request.

The record

CVE
CVE-2024-50640
Published
Aug 20, 2025
Updated
Aug 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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