Tigase XMPP Server before 5.1.0 does not verify that a request was made for an XMPP Server Dialback response, which allows remote XMPP serv…

published 2012-08-25 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4595

cvss: 6.4; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits: 0; none known

Tigase XMPP Server before 5.1.0 does not verify that a request was made for an XMPP Server Dialback response, which allows remote XMPP servers to spoof domains via a (1) Verify Response or (2) Authorization Response.

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-2012-4670 updated 2025-11-21 cvss 2.6

tigase: Prone to unsolicited XMPP Dialback attacks

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

1.31% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	6.4	AV:N/AC:L/Au:N/C:N/I:P/A:P

Classification

Weakness

CWE-20 Improper Input Validation

References

Sources

CVE List CVE-2012-4670
NVD CVE-2012-4670

Fencer Intel 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.

Summary