A Cross-Site Scripting (XSS) issue in the 'update user' and 'delete user' functionalities…
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
A Cross-Site Scripting (XSS) issue in the 'update user' and 'delete user' functionalities in settings/users.php in EPSON EPS TSE Server 8 (21.0.11) allows an authenticated attacker to inject a JavaScript payload in the user management page that is executed by an administrator.
Why it matters now
EPSS 0.00633 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:epson:eps_tse_server_8_firmware:21.0.11:*:*:*:*:*:*:* | 21.0.11 | Vulnerable | SEIKO EPSON CORPORATION |
| cpe:2.3:h:epson:eps_tse_server_8:-:*:*:*:*:*:*:* | not specified by NVD | Running on | SEIKO EPSON CORPORATION |
- cpe:2.3:o:epson:eps_tse_server_8_firmware:21.0.11:*:*:*:*:*:*:* Versions 21.0.11 Vulnerable ·SEIKO EPSON CORPORATION
- cpe:2.3:h:epson:eps_tse_server_8:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SEIKO EPSON CORPORATION
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28930
- 2026-10-03 Alias added: GHSA-gw7h-3fw6-97j4
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More SEIKO EPSON CORPORATION Eps Tse Server 8 Firmware vulnerabilities
- TI-2020-17461 Unrestricted access to the log downloader functionality in EPSON EPS TSE Server 8… CVSS 3.1CRITICAL 9.8
- TI-2020-17463 Lack of an anti-CSRF token in the entire administrative interface in EPSON EPS TSE Server… CVSS 3.1HIGH 8.8
Sources
- CVE-2020-28930 · CVE Program
- CVE-2020-28930 · NVD
- FIRST EPSS
- GHSA-gw7h-3fw6-97j4 · GitHub Advisory Database · CC BY 4.0
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