How severe is CVE-2017-5591?

CVE-2017-5591 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-5591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5591?

CVE-2017-5591 primarily affects Sleekxmpp Project Sleekxmpp. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-5591?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-5591 published?

CVE-2017-5591 was published on 2017-02-09 and last updated on 2026-06-17.

CVE-2017-5591

CVE-2017-5591 is a medium-severity vulnerability in Sleekxmpp Project Sleekxmpp with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Sleekxmpp Project Sleekxmpp
Published: 2017-02-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-5591?: 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.
How severe is CVE-2017-5591?: CVE-2017-5591 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-5591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5591?: CVE-2017-5591 primarily affects Sleekxmpp Project Sleekxmpp. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-5591?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-5591 published?: CVE-2017-5591 was published on 2017-02-09 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:sleekxmpp_project:sleekxmpp:*:*:*:*:*:*:*:*
cpe:2.3:a:slixmpp_project:slixmpp:*:*:*:*:*:*:*:*
cpe:2.3:a:poezio:poezio:0.8:*:*:*:*:*:*:*
cpe:2.3:a:poezio:poezio:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:poezio:poezio:0.9:*:*:*:*:*:*:*
cpe:2.3:a:poezio:poezio:0.10:*:*:*:*:*:*:*

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