SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-5604

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.

MEDIUM 5.9EPSS 1.33%

Does this matter?

Lower severity and a low EPSS score (1.33%). Track it; it rarely justifies an emergency change on its own.

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 mcabber 1.0.0 - 1.0.4.

CVSS 3.0
5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
1.33% probability · 71th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20, CWE-346
Affected
mcabber/mcabber
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 1.33%27 October 202627 October 2026

EPSS 1.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.