CVE-2011-3594
CVE-2011-3594 is a medium-severity vulnerability in Pidgin Libpurple with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Medium (CVSS 2.0 base score 4.3)
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Pidgin Libpurple
- Published:
- Last modified:
Description
The g_markup_escape_text function in the SILC protocol plug-in in libpurple 2.10.0 and earlier, as used in Pidgin and possibly other products, allows remote attackers to cause a denial of service (crash) via invalid UTF-8 sequences that trigger use of invalid pointers and an out-of-bounds read, related to interactions with certain versions of glib2.
Frequently asked questions
- What is CVE-2011-3594?
- The g_markup_escape_text function in the SILC protocol plug-in in libpurple 2.10.0 and earlier, as used in Pidgin and possibly other products, allows remote attackers to cause a denial of service (crash) via invalid UTF-8 sequences that trigger use of invalid pointers and an out-of-bounds read, related to interactions with certain versions of glib2.
- How severe is CVE-2011-3594?
- CVE-2011-3594 has a CVSS 2.0 base score of 4.3, rated medium severity.
- Is CVE-2011-3594 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2011-3594?
- CVE-2011-3594 primarily affects Pidgin Libpurple. In total, 48 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2011-3594?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2011-3594 published?
- CVE-2011-3594 was published on 2011-11-04 and last updated on 2026-06-16.
References
- http://developer.pidgin.im/ticket/14636
- http://developer.pidgin.im/viewmtn/revision/diff/be5e66abad2af29604bc794cc4c6600ab12751f3/with/7eb1f6d56cc58bbb5b56b7df53955d36b9b419b8
- http://pidgin.im/news/security/?id=56
- http://secunia.com/advisories/46376
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:183
- http://www.redhat.com/support/errata/RHSA-2011-1371.html
- https://bugzilla.redhat.com/show_bug.cgi?id=743481
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18034
Affected products (48)
- cpe:2.3:a:pidgin:libpurple:*:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.6:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.7:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.8:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.5.9:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.4:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.6.6:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.0:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.1:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.2:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.3:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.4:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.5:*:*:*:*:*:*:*
- cpe:2.3:a:pidgin:libpurple:2.7.6:*:*:*:*:*:*:*
More vulnerabilities in Pidgin Libpurple
- CVE-2009-3085 — Medium (CVSS 5.0): The XMPP protocol plugin in libpurple in Pidgin before 2.6.2 does not properly handle an error IQ stanza during an…
- CVE-2009-3084 — Medium (CVSS 5.0): The msn_slp_process_msg function in libpurple/protocols/msn/slpcall.c in the MSN protocol plugin in libpurple 2.6.0 and…
- CVE-2009-3083 — Medium (CVSS 5.0): The msn_slp_sip_recv function in libpurple/protocols/msn/slp.c in the MSN protocol plugin in libpurple in Pidgin before…
- CVE-2009-2703 — Medium (CVSS 5.0): libpurple/protocols/irc/msgs.c in the IRC protocol plugin in libpurple in Pidgin before 2.6.2 allows remote IRC servers…
- CVE-2011-2943 — Medium (CVSS 4.3): The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin before 2.10.0…
- CVE-2010-4528 — Medium (CVSS 4.0): directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote…
All CVEs affecting Pidgin Libpurple →
Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities
- CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
- CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
- CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
- CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
- CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
- CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.