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Fencer Vulns
medium 5.0

CVE-2009-3026 json

protocols/jabber/auth.c in libpurple in Pidgin 2.6.0, and possibly other versions, does not follow the "require TLS/SSL" preference when co…

published 2009-08-31 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3010

cvss
5.0
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

Summary

protocols/jabber/auth.c in libpurple in Pidgin 2.6.0, and possibly other versions, does not follow the "require TLS/SSL" preference when connecting to older Jabber servers that do not follow the XMPP specification, which causes libpurple to connect to the server without the expected encryption and allows remote attackers to sniff sessions.

Patch / fix

  • pidgin Debian 14, Debian 13, Debian 12 2.6.1-1

debian advisories DEBIAN-CVE-2009-3026

  • pidgin RHEL 4 2.6.2-2.el4
  • pidgin RHEL 5 PRODUCTIVITY, RHEL 5 2.6.2-2.el5
  • finch RHEL 4 2.6.2-2.el4
  • finch RHEL 5 PRODUCTIVITY, RHEL 5 2.6.2-2.el5
  • libpurple RHEL 4 2.6.2-2.el4
  • libpurple RHEL 5 PRODUCTIVITY, RHEL 5 2.6.2-2.el5
  • pidgin-perl RHEL 4 2.6.2-2.el4
  • pidgin-perl RHEL 5 PRODUCTIVITY, RHEL 5 2.6.2-2.el5

red hat advisories RHSA-2009:1453

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-2009-3026 updated cvss 4.3

pidgin: ignores SSL/TLS requirements with old jabber servers

  • Red Hat Enterprise Linux AS version 4 finch 2.6.2-2.el4, pidgin 2.6.2-2.el4, libpurple 2.6.2-2.el4, pidgin-perl 2.6.2-2.el4, libpurple-tcl 2.6.2-2.el4, libpurple-perl 2.6.2-2.el4 Red Hat Enterprise Linux Desktop (v. 5 client) finch 2.6.2-2.el5, pidgin 2.6.2-2.el5, libpurple 2.6.2-2.el5, pidgin-perl 2.6.2-2.el5, libpurple-tcl 2.6.2-2.el5, libpurple-perl 2.6.2-2.el5 Red Hat Enterprise Linux Desktop version 4 finch 2.6.2-2.el4, pidgin 2.6.2-2.el4, libpurple 2.6.2-2.el4, pidgin-perl 2.6.2-2.el4, libpurple-tcl 2.6.2-2.el4, libpurple-perl 2.6.2-2.el4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) finch 2.6.2-2.el5, pidgin 2.6.2-2.el5, libpurple 2.6.2-2.el5, pidgin-perl 2.6.2-2.el5, libpurple-tcl 2.6.2-2.el5, libpurple-perl 2.6.2-2.el5 Red Hat Enterprise Linux ES version 4 finch 2.6.2-2.el4, pidgin 2.6.2-2.el4, libpurple 2.6.2-2.el4, pidgin-perl 2.6.2-2.el4, libpurple-tcl 2.6.2-2.el4, libpurple-perl 2.6.2-2.el4 Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) finch 2.6.2-2.el5, pidgin 2.6.2-2.el5, libpurple 2.6.2-2.el5, pidgin-perl 2.6.2-2.el5, libpurple-tcl 2.6.2-2.el5, libpurple-perl 2.6.2-2.el5
    +1 more products
    Red Hat Enterprise Linux WS version 4 finch 2.6.2-2.el4, pidgin 2.6.2-2.el4, libpurple 2.6.2-2.el4, pidgin-perl 2.6.2-2.el4, libpurple-tcl 2.6.2-2.el4, libpurple-perl 2.6.2-2.el4
    fixed: vendor fix RHSA-2009:1453

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

1.30% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

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.