CVE-2017-5858
User Impersonation in converse.js
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).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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).
- Record
CVE-2017-5858- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-20, CWE-346
- Updated
- 2026-11-02
CVE List No score
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).
- Record
CVE-2017-5858- Updated
- 2026-11-02
EUVDEUVD-2020-1338 No score
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).
- Record
EUVD-2020-1338- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w973-2qcc-p78x
User Impersonation in converse.js
Versions of converse.js prior to 1.0.7 for 1.x or 2.0.5 for 2.x are vulnerable to User Impersonation. The package provides an incorrect implementation of XEP-0280: Message Carbons that 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.
Recommendation
If you're using converse.js 1.x, upgrade to 1.0.7 or later.
If you're using converse.js 2.x, upgrade to 2.0.5 or later.
- Record
GHSA-w973-2qcc-p78x- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-20, CWE-346
- Updated
- 2026-11-02
OSV
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).
- Record
CVE-2017-5858- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-w973-2qcc-p78x
User Impersonation in converse.js
Versions of converse.js prior to 1.0.7 for 1.x or 2.0.5 for 2.x are vulnerable to User Impersonation. The package provides an incorrect implementation of XEP-0280: Message Carbons that 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.
Recommendation
If you're using converse.js 1.x, upgrade to 1.0.7 or later.
If you're using converse.js 2.x, upgrade to 2.0.5 or later.
- Record
GHSA-w973-2qcc-p78x- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-20, CWE-346
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
converse.jsnpm |
before 1.0.7 | 1.0.7 |
converse.jsnpm |
2.0.0 up to 2.0.5 | 2.0.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-5858 is a medium vulnerability (CVSS 5.9) in Conversejs Converse.js, published February 9, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.94%, the 61st percentile. Fixed in converse.js 1.0.7.
References
github.com/jcbrand/converse.js/commit/42f249cabbbf5c026398e6d3b350f6f9536ea572
openwall.com/lists/oss-security/2017/02/09/29
securityfocus.com/bid/96183
rt-solutions.de/en/2017/02/CVE-2017-5589_xmpp_carbons
snyk.io/vuln/SNYK-JS-CONVERSEJS-449664