CVE-2020-24771Public exploitNetwork attack vector

Unauthenticated content publishing via missing login check

Published Mar 30, 2022 · Updated Aug 4, 2024

Missing authorization in NexusPHP 1.5 allows remote attackers to publish Funbox content through the unauthenticated fun.php endpoint. The add action accepts subject and body fields and stores a post without checking for a logged-in user, leaving the publisher empty. Network access to the site is sufficient; the injected post is displayed on the home page to all users, subject to one post per 24 hours.

CVSS severity7.5
High
EPSS probability2.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in NexusPHP 1.5 allows remote attackers to publish Funbox content through the unauthenticated fun.php endpoint. The add action accepts subject and body fields and stores a post without checking for a logged-in user, leaving the publisher empty. Network access to the site is sufficient; the injected post is displayed on the home page to all users, subject to one post per 24 hours.

The record

CVE
CVE-2020-24771
Published
Mar 30, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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

5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
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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