libpurple in Finch in Pidgin before 2.6.6, when an XMPP multi-user chat (MUC) room is used, does not properly parse nicknames containing <br> sequences, which allows remote attackers to cause a denial of service (application crash) via a crafted nickname.
2010-02-24T18:30:00.420
2025-04-11T00:51:21.963
Deferred
CVSSv2: 4.3 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | pidgin | pidgin | ≤ 2.6.5 | Yes |
| Application | pidgin | pidgin | 2.0.0 | Yes |
| Application | pidgin | pidgin | 2.0.1 | Yes |
| Application | pidgin | pidgin | 2.0.2 | Yes |
| Application | pidgin | pidgin | 2.1.0 | Yes |
| Application | pidgin | pidgin | 2.1.1 | Yes |
| Application | pidgin | pidgin | 2.2.0 | Yes |
| Application | pidgin | pidgin | 2.2.1 | Yes |
| Application | pidgin | pidgin | 2.2.2 | Yes |
| Application | pidgin | pidgin | 2.3.0 | Yes |
| Application | pidgin | pidgin | 2.3.1 | Yes |
| Application | pidgin | pidgin | 2.4.0 | Yes |
| Application | pidgin | pidgin | 2.4.1 | Yes |
| Application | pidgin | pidgin | 2.4.2 | Yes |
| Application | pidgin | pidgin | 2.4.3 | Yes |
| Application | pidgin | pidgin | 2.5.0 | Yes |
| Application | pidgin | pidgin | 2.5.1 | Yes |
| Application | pidgin | pidgin | 2.5.2 | Yes |
| Application | pidgin | pidgin | 2.5.3 | Yes |
| Application | pidgin | pidgin | 2.5.4 | Yes |
| Application | pidgin | pidgin | 2.5.5 | Yes |
| Application | pidgin | pidgin | 2.5.6 | Yes |
| Application | pidgin | pidgin | 2.5.7 | Yes |
| Application | pidgin | pidgin | 2.5.8 | Yes |
| Application | pidgin | pidgin | 2.5.9 | Yes |
| Application | pidgin | pidgin | 2.6.0 | Yes |
| Application | pidgin | pidgin | 2.6.1 | Yes |
| Application | pidgin | pidgin | 2.6.2 | Yes |
| Application | pidgin | pidgin | 2.6.4 | Yes |