CVE-2023-5877

Name: CVE-2023-5877
Creator: NVD / NIST
Published: 2024-01-01T15:15:42.727+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2023-5877 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The affiliate-toolkit WordPress plugin before 3.4.3 lacks authorization and authentication for requests to it's affiliate-toolkit-starter/tools/atkp_imagereceiver.php endpoint, allowing unauthenticated visitors to make requests to arbitrary URL's, including RFC1918 private addresses, leading to a Server Side Request Forgery (SSRF) issue.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

The affiliate-toolkit WordPress plugin before 3.4.3 lacks authorization and authentication for requests to it's affiliate-toolkit-starter/tools/atkp_imagereceiver.php endpoint, allowing unauthenticated visitors to make requests to arbitrary URL's, including RFC1918 private addresses, leading to a Server Side Request Forgery (SSRF) issue.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Servit	Affiliate-Toolkit	< 3.4.3

References

https://wpscan.com/vulnerability/39ed4934-3d91-4924-8acc-25759fef9e81Exploit, Third Party Advisory
https://wpscan.com/vulnerability/39ed4934-3d91-4924-8acc-25759fef9e81Exploit, Third Party Advisory

Timeline

Published: Jan 1, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5877?

How severe is CVE-2023-5877?

CVE-2023-5877 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5877?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-5877?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST