CVE-2025-56320Public exploitNetwork attack vector

Session-context script execution via stored chat payloads

Published Oct 17, 2025 · Updated Oct 17, 2025

Stored XSS in CobbleStone Enterprise Contract Management Portal 22.4.0 allows remote authenticated users to execute browser scripts. Published sources identify the chat box as the locus but do not disclose the affected function, input field, or exact sanitization failure. Low-privileged access and a viewer opening the stored message are required; execution is limited to the victim browser session, and the supplier disputes relevance because the version is obsolete and unsupported.

CVSS severity5.4
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in CobbleStone Enterprise Contract Management Portal 22.4.0 allows remote authenticated users to execute browser scripts. Published sources identify the chat box as the locus but do not disclose the affected function, input field, or exact sanitization failure. Low-privileged access and a viewer opening the stored message are required; execution is limited to the victim browser session, and the supplier disputes relevance because the version is obsolete and unsupported.

The record

CVE
CVE-2025-56320
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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