CVE-2018-10847

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-30 · updated 2026-06-17
Weakness: CWE-592

Description

prosody before versions 0.10.2, 0.9.14 is vulnerable to an Authentication Bypass. Prosody did not verify that the virtual host associated with a user session remained the same across stream restarts. A user may authenticate to XMPP host A and migrate their authenticated session to XMPP host B of the same Prosody instance.

Affected products

Prosody: before 0.9.14; 0.10.0, 0.10.1 — fixed in 0.9.14

How to fix

Upgrade to a fixed version: Prosody 0.9.14. Check the vendor advisory for mitigations.

References

https://blog.prosody.im/prosody-0-10-2-security-release/
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10847
https://issues.prosody.im/1147
https://prosody.im/security/advisory_20180531/
https://www.debian.org/security/2018/dsa-4216
https://blog.prosody.im/prosody-0-10-2-security-release/
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10847
https://issues.prosody.im/1147
https://prosody.im/security/advisory_20180531/
https://www.debian.org/security/2018/dsa-4216

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