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…

Description

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.

Scores

EPSS (exploitation in 30 days)

2.9% · top 13% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (26)

• FEDORA-2010-1279 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• 38294 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=565786 (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2010:0115 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• ADV-2010-0413 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 38563 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• MDVSA-2010:085 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• USN-902-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 38640 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2010-0914 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 38658 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:18230 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• FEDORA-2010-1934 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• ADV-2010-1020 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• SUSE-SR:2010:006 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• FEDORA-2010-1383 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• 62439 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• DSA-2038 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 38712 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• pidgin-xmpp-nickname-dos(56399) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• http://pidgin.im/news/security/?id=44 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 39509 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:11485 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• MDVSA-2010:041 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• 38915 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://developer.pidgin.im/wiki/ChangeLog (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2010-0420](https://trackcve.app/badge/CVE-2010-0420.svg)](https://trackcve.app/cve/CVE-2010-0420)

Record last updated 7 Aug 2024, 00:45 UTC.