CVE-2017-5602: An incorrect implementation of "XEP-0280: Message Carbons" in multiple XMPP clients allows a remote attacker t

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MEDIUM 5.9REMOTEDOWNGRADE

CVE-2017-5602 is a medium-severity flaw (CVSS 5.9) affecting jappix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 jappix 1.0.0 to 1.1.6.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-20, CWE-346
Published	2017-02-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: jappix project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-02-09 20:59 UTCPublished CVE record published
2026-06-17 01:20 UTCUpdated Record last modified

jappix project jappix DOWNGRADE

Affected: 1.0.0 · 1.0.1 · 1.0.2 · 1.0.3 · 1.0.4 · 1.0.5 · 1.0.6 · 1.0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy jappix || rpm -q jappix || jappix --version

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison jappix sudo apt install jappix=<VERSION_BEFORE_1.0.0> sudo apt-mark hold jappix

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jappix sudo dnf downgrade jappix-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add jappix

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-5602?

jappix: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-5602 being exploited?

CVE-2017-5602 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-5602 affect?

CVE-2017-5602 affects jappix. Severity is medium (CVSS 5.9). 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 engin

How urgent is CVE-2017-5602?

Priority 44/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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