Reflected XSS via unsanitized coercion-rule title
Published Jan 20, 2026 · Updated Jan 20, 2026
Reflected XSS in MedDream PACS Premium 7.3.6.870 allows remote attackers to execute JavaScript in an authenticated user's browser. Pacs/modifyCoercion.php passes the attacker-controlled title query parameter to printf in an error message without HTML encoding or sanitization. Exploitation requires an authenticated user to follow a crafted URL; script execution occurs in the PACS origin and can read or alter data accessible to that session.
Summary
What happened
Reflected XSS in MedDream PACS Premium 7.3.6.870 allows remote attackers to execute JavaScript in an authenticated user's browser. Pacs/modifyCoercion.php passes the attacker-controlled title query parameter to printf in an error message without HTML encoding or sanitization. Exploitation requires an authenticated user to follow a crafted URL; script execution occurs in the PACS origin and can read or alter data accessible to that session.
The record
- CVE
- CVE-2025-54861
- Published
- Jan 20, 2026
- Updated
- Jan 20, 2026
- Vendor
- MedDream
- Product
- MedDream PACS Premium
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 20, 2026CVE publishedPublication date reported by the CVE source.
- Jan 20, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.3.6.870
What conditions does exploitation require?
What is affected?
Published CVSS scores
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
- Talos modifyCoercion reflected-XSS requestproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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