CVE-2025-54543Network attack vector

Stored XSS via unsanitized SEO meta description

Published Aug 28, 2025 · Updated Aug 28, 2025

Stored XSS in OpenSolution Quick.Cms 6.8 allows remote authenticated users with admin privileges to execute JavaScript in page visitors' browsers. The page editor accepts arbitrary HTML and JavaScript through sDescriptionMeta, stores it as an SEO meta description, and renders it on the edited page. Exploitation requires administration access and a subsequent page visit, where the payload runs in the website's browser origin.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Stored XSS in OpenSolution Quick.Cms 6.8 allows remote authenticated users with admin privileges to execute JavaScript in page visitors' browsers. The page editor accepts arbitrary HTML and JavaScript through sDescriptionMeta, stores it as an SEO meta description, and renders it on the edited page. Exploitation requires administration access and a subsequent page visit, where the payload runs in the website's browser origin.

The record

CVE
CVE-2025-54543
Published
Aug 28, 2025
Updated
Aug 28, 2025
Vendor
OpenSolution
Product
Quick.Cms
Classifications
CWE-79, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=6.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OpenSolution · Quick.Cmsversion=6.8

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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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