CVE-2023-5931Public exploitNetwork attack vector

Subscriber-level code execution via unrestricted API upload

Published Dec 26, 2023 · Updated Aug 2, 2024

Unrestricted file upload in rtCamp rtMedia before 4.6.16 allows remote authenticated users to execute PHP code through its JSON API. The rtmedia_upload_media method accepts base64-encoded rtmedia_file content and an attacker-controlled image_type path without rejecting PHP files or traversal sequences. Exploitation requires a low-privilege WordPress account, BuddyPress, and the plugin JSON API to be enabled; successful uploads place executable PHP under the web root.

CVSS severity8.8
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in rtCamp rtMedia before 4.6.16 allows remote authenticated users to execute PHP code through its JSON API. The rtmedia_upload_media method accepts base64-encoded rtmedia_file content and an attacker-controlled image_type path without rejecting PHP files or traversal sequences. Exploitation requires a low-privilege WordPress account, BuddyPress, and the plugin JSON API to be enabled; successful uploads place executable PHP under the web root.

The record

CVE
CVE-2023-5931
Published
Dec 26, 2023
Updated
Aug 2, 2024
Vendor
rtCamp
Product
rtMedia
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.6.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

rtCamp · rtMediaversion=0 <4.6.16

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

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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