CVE-2026-5737

MEDIUM
Published May 28, 2026 Modified May 28, 2026 CWE-918

Description

The Independent Analytics plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.14.9. This is due to a public tracking route at /wp-json/iawp/search that accepts attacker-controlled referrer_url values when the signature matches, combined with a scheduled favicon fetcher that performs unrestricted cURL requests to stored domains. The signature validation is insufficient because the signature is embedded in publicly-accessible JavaScript and the salt is static per site, allowing attackers to extract valid signatures. The favicon downloader uses raw cURL functions without any SSRF protection mechanisms (no localhost blocking, no private network filtering, and does not use WordPress's wp_safe_remote_* functions). This makes it possible for unauthenticated attackers to inject malicious referrer domains into the database and trigger server-side requests to arbitrary hosts including internal services.

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CVSS v3.1 Score

6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0026
Probability of exploitation
0.17%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

References

Other References

https://plugins.trac.wordpress.org/browser/independent-analytics/tags/2.14.4/IAWP/Favicon/FaviconDownloader.php#L57 https://plugins.trac.wordpress.org/browser/independent-analytics/tags/2.14.4/IAWP/FetchFaviconsJob.php#L27 https://plugins.trac.wordpress.org/browser/independent-analytics/tags/2.14.4/IAWP/REST_API.php#L409 https://plugins.trac.wordpress.org/browser/independent-analytics/tags/2.14.4/IAWP/Views/View.php#L252 https://plugins.trac.wordpress.org/browser/independent-analytics/trunk/IAWP/Favicon/FaviconDownloader.php#L57 https://plugins.trac.wordpress.org/browser/independent-analytics/trunk/IAWP/FetchFaviconsJob.php#L27 https://plugins.trac.wordpress.org/browser/independent-analytics/trunk/IAWP/REST_API.php#L409 https://plugins.trac.wordpress.org/browser/independent-analytics/trunk/IAWP/Views/View.php#L252 https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3537814%40independent-analytics&new=3537814%40independent-analytics&sfp_email=&sfph_mail= https://www.wordfence.com/threat-intel/vulnerabilities/id/06ecc40c-6a63-4354-9f49-1925896622f5?source=cve

Frequently Asked Questions

What is CVE-2026-5737? +
The Independent Analytics plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.14.9. This is due to a public tracking route at /wp-json/iawp/search that accepts attacker-controlled referrer_url values when the signature matches, combined with a scheduled favicon fetcher that performs unrestricted cURL requests to stored domains. The signature validation is insufficient because the signature is embedded in publicly-accessible JavaScript and the salt is static per site, allowing attackers to extract valid signatures. The favicon downloader uses raw cURL functions without any SSRF protection mechanisms (no localhost blocking, no private network filtering, and does not use WordPress's wp_safe_remote_* functions). This makes it possible for unauthenticated attackers to inject malicious referrer domains into the database and trigger server-side requests to arbitrary hosts including internal services. It has a CVSS v3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2026-5737? +
CVE-2026-5737 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0026, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-5737? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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