An incorrect implementation of "XEP-0280: Message Carbons" in multiple XMPP clients…
Priority LOW 30CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-346.
Summary
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.
Why it matters now
EPSS 0.01714 77th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix Fixed slixmpp (PyPI): 1.2.4SleekXMPP (PyPI): 1.3.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | slixmpp (PyPI) | before 1.2.4 | 1.2.4 | Patch available | GHSA-c35g-jr5f-h83p |
| — | SleekXMPP (PyPI) | before 1.3.2 | 1.3.2 | Patch available | GHSA-c35g-jr5f-h83p |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- slixmpp (PyPI) Vendor— Affected before 1.2.4 Fixed in 1.2.4 Patch available GHSA-c35g-jr5f-h83p
- SleekXMPP (PyPI) Vendor— Affected before 1.3.2 Fixed in 1.3.2 Patch available GHSA-c35g-jr5f-h83p
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sleekxmpp_project:sleekxmpp:*:*:*:*:*:*:*:* | up to 1.3.1 | Vulnerable | Sleekxmpp Project |
| cpe:2.3:a:slixmpp_project:slixmpp:*:*:*:*:*:*:*:* | up to 1.2.3 | Vulnerable | Slixmpp Project |
| cpe:2.3:a:poezio:poezio:0.8:*:*:*:*:*:*:* | 0.8 | Vulnerable | Poezio |
| cpe:2.3:a:poezio:poezio:0.8.1:*:*:*:*:*:*:* | 0.8.1 | Vulnerable | Poezio |
| cpe:2.3:a:poezio:poezio:0.9:*:*:*:*:*:*:* | 0.9 | Vulnerable | Poezio |
| cpe:2.3:a:poezio:poezio:0.10:*:*:*:*:*:*:* | 0.10 | Vulnerable | Poezio |
- cpe:2.3:a:sleekxmpp_project:sleekxmpp:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·Sleekxmpp Project
- cpe:2.3:a:slixmpp_project:slixmpp:*:*:*:*:*:*:*:* Versions up to 1.2.3 Vulnerable ·Slixmpp Project
- cpe:2.3:a:poezio:poezio:0.8:*:*:*:*:*:*:* Versions 0.8 Vulnerable ·Poezio
- cpe:2.3:a:poezio:poezio:0.8.1:*:*:*:*:*:*:* Versions 0.8.1 Vulnerable ·Poezio
- cpe:2.3:a:poezio:poezio:0.9:*:*:*:*:*:*:* Versions 0.9 Vulnerable ·Poezio
- cpe:2.3:a:poezio:poezio:0.10:*:*:*:*:*:*:* Versions 0.10 Vulnerable ·Poezio
Remediation
- Fix · GHSA-c35g-jr5f-h83p slixmpp (PyPI) Fixed in 1.2.4 Advisory →
- Fix · GHSA-c35g-jr5f-h83p SleekXMPP (PyPI) Fixed in 1.3.2 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-5591
- 2026-10-03 Alias added: GHSA-c35g-jr5f-h83p
References
Exploit 3
Other 9
- https://github.com/fritzy/SleekXMPP/issues/442
- https://github.com/fritzy/SleekXMPP/commit/285495d5ee2427d93d961ceedcd1829383e5196d
- https://github.com/poezio/slixmpp
- https://github.com/pypa/advisory-database/tree/main/vulns/sleekxmpp/PYSEC-2017-103.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/slixmpp/PYSEC-2017-104.yaml
- https://pypi.org/project/sleekxmpp
- https://pypi.org/project/slixmpp
- https://rt-solutions.de/en/2017/02/CVE-2017-5589_xmpp_carbons
- https://web.archive.org/web/20200227192025/http://www.securityfocus.com/bid/96166
Sources
- CVE-2017-5591 · CVE Program
- CVE-2017-5591 · NVD
- FIRST EPSS
- GHSA-c35g-jr5f-h83p · GitHub Advisory Database · CC BY 4.0
- CVE-2017-5591 · Red Hat security data · CC BY 4.0
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