Stored XSS via unsanitized upload filenames
Published Jul 10, 2026 · Updated Jul 10, 2026
Stored XSS in R-SOFT DMS before 3.17-2580 or 3.19-2832 allows remote authenticated users to run script in other users’ browsers. The upload workflow stores attacker-supplied HTML and JavaScript in a filename, then renders that name without safe neutralization in file-list and upload-status views. An attacker needs an authenticated account, and execution requires another user to open either affected view; the script runs in that user’s DMS origin.
Summary
What happened
Stored XSS in R-SOFT DMS before 3.17-2580 or 3.19-2832 allows remote authenticated users to run script in other users’ browsers. The upload workflow stores attacker-supplied HTML and JavaScript in a filename, then renders that name without safe neutralization in file-list and upload-status views. An attacker needs an authenticated account, and execution requires another user to open either affected view; the script runs in that user’s DMS origin.
The record
- CVE
- CVE-2026-41877
- Published
- Jul 10, 2026
- Updated
- Jul 10, 2026
- Vendor
- R-SOFT SERWIS
- Product
- R-SOFT DMS
- Classifications
- CWE-79, CAPEC-592, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 10, 2026CVE publishedPublication date reported by the CVE source.
- Jul 10, 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 <v3.17-2580
- Affected versionversion=0 <v3.19-2832
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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