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Fencer Vulns
medium 4.2

CVE-2018-10847 json

prosody before versions 0.10.2, 0.9.14 is vulnerable to an Authentication Bypass.

published 2018-07-30 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2916

cvss
4.2
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

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.

Patch / fix

  • prosody prosody 0.9.14
  • prosody Debian 14, Debian 13, Debian 12 0.10.2-1

debian advisories DEBIAN-CVE-2018-10847

  • prosody Ubuntu Pro 18.04 LTS 0.10.0-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-10847

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • prosody Alpine 3.7 0.10.2-r0

alpine advisories ALPINE-CVE-2018-10847

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-10847 updated cvss 4.2

prosody: cross-host authentication vulnerability

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 4.2 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • [UNKNOWN] prosody

Classification

Weakness
  • CWE-592 DEPRECATED: Authentication Bypass Issues
  • CWE-287 Improper Authentication

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.