What’s Vulnerable › Vulnerabilities

CVE-2017-5591

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-02-09 · updated 2026-06-17
• Weakness: CWE-20

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 SleekXMPP up to 1.3.1 and Slixmpp all versions up to 1.2.3, as bundled in poezio (0.8 - 0.10) and other products.

Affected products

• Poezio: 0.8, 0.8.1, 0.9, 0.10
• Sleekxmpp Project Sleekxmpp: through 1.3.1
• Slixmpp Project Slixmpp: through 1.2.3

References

• http://openwall.com/lists/oss-security/2017/02/09/29
• http://www.securityfocus.com/bid/96166
• https://github.com/poezio/slixmpp/commit/22664ee7b86c8e010f312b66d12590fb47160ad8
• 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
• http://openwall.com/lists/oss-security/2017/02/09/29
• http://www.securityfocus.com/bid/96166
• https://github.com/poezio/slixmpp/commit/22664ee7b86c8e010f312b66d12590fb47160ad8
• 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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