CVE-2023-0503Public exploitNetwork attack vector

Plugin activation via missing AJAX nonce

Published Mar 27, 2023 · Updated Feb 19, 2025

Cross-site request forgery in HasThemes Free WooCommerce Theme 99fy Extension before 1.2.8 allows remote attackers to activate plugins. The 99fy_ajax_plugin_activation AJAX action accepts a caller-controlled location value and activates the named installed plugin without verifying a CSRF nonce. An administrator must be logged in and induced to submit the crafted request; the bounded result is activation of a plugin already present on the site.

CVSS severity4.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in HasThemes Free WooCommerce Theme 99fy Extension before 1.2.8 allows remote attackers to activate plugins. The 99fy_ajax_plugin_activation AJAX action accepts a caller-controlled location value and activates the named installed plugin without verifying a CSRF nonce. An administrator must be logged in and induced to submit the crafted request; the bounded result is activation of a plugin already present on the site.

The record

CVE
CVE-2023-0503
Published
Mar 27, 2023
Updated
Feb 19, 2025
Vendor
HasThemes
Product
Free WooCommerce Theme 99fy Extension
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2025Record 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 <1.2.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HasThemes · Free WooCommerce Theme 99fy Extensionversion=0 <1.2.8

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

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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