Medium

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

  • Disclosed: 09.02.2017
  • Updated: 11.10.2026 12:20

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 software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Python (PyPI) sleekxmpp < 1.3.2 1.3.2
Python (PyPI) slixmpp < 1.2.4 1.2.4

References

CVSS score 5.9/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-940
Platform
Python (PyPI)
Package
sleekxmpp, slixmpp
Disclosed
09.02.2017
Updated
11.10.2026 12:20

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2017-104 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-c35g-jr5f-h83p - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2017-103 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: slixmpp

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
3
First → latest
02.2017 12.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 2
  • Medium 1

Disclosures per year

  1. 2017: 1
  2. 2018: 0
  3. 2019: 1
  4. 2020: 0
  5. 2021: 0
  6. 2022: 1
  7. 2023: 0
  8. 2024: 0
  9. 2025: 0
  10. 2026: 0
  1. 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 this entry
    Medium · 5.9 CVE-2017-5591 < 1.2.4 1.2.4

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