Script execution via incomplete search-input filtering
Published Dec 22, 2021 · Updated Jul 9, 2026
Cross-site scripting in S-CMS Government Station Building System 5.0 allows remote attackers to execute script through crafted search input. The search function incompletely filters event-handler text and returns injected SVG markup, allowing an onload handler to execute when the response is rendered. A user must render the crafted search response; the demonstrated consequence is attacker-supplied script execution in that user's browser.
Summary
What happened
Cross-site scripting in S-CMS Government Station Building System 5.0 allows remote attackers to execute script through crafted search input. The search function incompletely filters event-handler text and returns injected SVG markup, allowing an onload handler to execute when the response is rendered. A user must render the crafted search response; the demonstrated consequence is attacker-supplied script execution in that user's browser.
The record
- CVE
- CVE-2020-20425
- Published
- Dec 22, 2021
- Updated
- Jul 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 22, 2021CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- SVG onload search-input proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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