CVE-2024-50531Network attack vector

Unauthenticated code execution via timer image upload

Published Nov 4, 2024 · Updated Apr 28, 2026

Unrestricted file upload in RSVPMaker for Toastmasters 6.2.4 and earlier allows remote attackers to place web shells on the server. The timer image upload accepts attacker-controlled files without restricting dangerous executable types, enabling server-side code execution when an uploaded shell is requested. The upload is reachable without authentication or user interaction, and successful exploitation runs code with the web server process's privileges.

CVSS severity10.0
Critical
EPSS probability0.51%
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 RSVPMaker for Toastmasters 6.2.4 and earlier allows remote attackers to place web shells on the server. The timer image upload accepts attacker-controlled files without restricting dangerous executable types, enabling server-side code execution when an uploaded shell is requested. The upload is reachable without authentication or user interaction, and successful exploitation runs code with the web server process's privileges.

The record

CVE
CVE-2024-50531
Published
Nov 4, 2024
Updated
Apr 28, 2026
Vendor
David F. Carr
Product
RSVPMaker
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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 <=6.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

David F. Carr · RSVPMakerversion=0 <=6.2.4
David F. Carr · RSVPMaker for Toastmastersversion=0 <=6.2.4 changes=[{"at":"6.2.5","status":"unaffected"}]

Published CVSS scores

9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8WordfenceCVSS: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

Public exploit references

No public exploit references are available in this record.

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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