Administrator session compromise via unneutralized UI fields
Published Mar 31, 2026 · Updated Mar 31, 2026
Cross-site scripting in PaperCut NG/MF before 25.0.10 allows remote authenticated administrator users to execute script in another administrator's browser. Multiple admin-interface input fields accept untrusted HTML or script without sufficient neutralization and render it in another administrator's browser. Administrator access is required to plant the payload, and another administrator must view the affected interface; execution can expose that session or perform actions in its authenticated context.
Summary
What happened
Cross-site scripting in PaperCut NG/MF before 25.0.10 allows remote authenticated administrator users to execute script in another administrator's browser. Multiple admin-interface input fields accept untrusted HTML or script without sufficient neutralization and render it in another administrator's browser. Administrator access is required to plant the payload, and another administrator must view the affected interface; execution can expose that session or perform actions in its authenticated context.
The record
- CVE
- CVE-2026-4794
- Published
- Mar 31, 2026
- Updated
- Mar 31, 2026
- Vendor
- PaperCut
- Product
- PaperCut NG/MF
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Mar 31, 2026CVE publishedPublication date reported by the CVE source.
- Mar 31, 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=0 <25.0.10
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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