Vendor coverage
Track published CVEs, severity trends, and remediation context for pidgin products.
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Showing 1-50 of 50 vulnerabilities.
Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.
CVSS
6.9
MEDIUM
Published
Mar 21, 2026
An issue was discovered in Pidgin before 2.14.9. A remote attacker who can spoof DNS responses can redirect a client connection to a malicious server. The client will perform TLS certificate verification of the malicious domain name instead of the original XMPP service domain, allowing the attacker to take over control over the XMPP connection and to obtain user credentials and all communication content. This is similar to CVE-2022-24968.
CVSS
5.9
MEDIUM
Published
Jun 2, 2022
Pidgin 2.10.0 uses DBUS for certain cleartext communication, which allows local users to obtain sensitive information via a dbus session monitor.
CVSS
5.5
MEDIUM
Published
Nov 20, 2019
Pidgin version <2.11.0 contains a vulnerability in X.509 Certificates imports specifically due to improper check of return values from gnutls_x509_crt_init() and gnutls_x509_crt_import() that can result in code execution. This attack appear to be exploitable via custom X.509 certificate from another client. This vulnerability appears to have been fixed in 2.11.0.
CVSS
9.8
CRITICAL
Published
Sep 5, 2018
An out-of-bounds write flaw was found in the way Pidgin before 2.12.0 processed XML content. A malicious remote server could potentially use this flaw to crash Pidgin or execute arbitrary code in the context of the pidgin process.
CVSS
7.5
HIGH
Published
Jul 27, 2018
The Mxit protocol uses weak encryption when encrypting user passwords, which might allow attackers to (1) decrypt hashed passwords by leveraging knowledge of client registration codes or (2) gain login access by eavesdropping on login messages and re-using the hashed passwords.
CVSS
8.8
HIGH
Published
Mar 29, 2017
A directory traversal exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent from the server could potentially result in an overwrite of files. A malicious server or someone with access to the network traffic can provide an invalid filename for a splash image triggering the vulnerability.
CVSS
3.7
LOW
Published
Jan 6, 2017
An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent to the server could potentially result in an out-of-bounds read. A user could be convinced to enter a particular string which would then get converted incorrectly and could lead to a potential out-of-bounds read.
CVSS
3.1
LOW
Published
Jan 6, 2017
A buffer overflow vulnerability exists in the handling of the MXIT protocol Pidgin. Specially crafted data sent via the server could potentially result in a buffer overflow, potentially resulting in memory corruption. A malicious server or an unfiltered malicious user can send negative length values to trigger this vulnerability.
CVSS
8.1
HIGH
Published
Jan 6, 2017
A buffer overflow vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent by the server could potentially result in an out-of-bounds write of one byte. A malicious server can send a negative content-length in response to a HTTP request triggering the vulnerability.
CVSS
8.1
HIGH
Published
Jan 6, 2017
A buffer overflow vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent from the server could potentially result in arbitrary code execution. A malicious server or an attacker who intercepts the network traffic can send an invalid size for a packet which will trigger a buffer overflow.
CVSS
8.1
HIGH
Published
Jan 6, 2017
An exploitable out-of-bounds read exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT contact information sent from the server can result in memory disclosure.
CVSS
5.3
MEDIUM
Published
Jan 6, 2017
An exploitable memory corruption vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT MultiMX message sent via the server can result in an out-of-bounds write leading to memory disclosure and code execution.
CVSS
8.1
HIGH
Published
Jan 6, 2017
A denial of service vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in an out-of-bounds read. A malicious server or user can send an invalid mood to trigger this vulnerability.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in an out-of-bounds read. A malicious user, server, or man-in-the-middle attacker can send an invalid size for a file transfer which will trigger an out-of-bounds read vulnerability. This could result in a denial of service or copy data from memory to the file, resulting in an information leak if the file is sent to another user.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
An out-of-bounds write vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could cause memory corruption resulting in code execution.
CVSS
8.1
HIGH
Published
Jan 6, 2017
A denial of service vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent from the server could potentially result in an out-of-bounds read. A malicious server or man-in-the-middle attacker can send invalid data to trigger this vulnerability.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
A NULL pointer dereference vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in a denial of service vulnerability. A malicious server can send a packet starting with a NULL byte triggering the vulnerability.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
Multiple memory corruption vulnerabilities exist in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could result in multiple buffer overflows, potentially resulting in code execution or memory disclosure.
CVSS
8.1
HIGH
Published
Jan 6, 2017
An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in an out-of-bounds read. A malicious user, server, or man-in-the-middle can send an invalid size for an avatar which will trigger an out-of-bounds read vulnerability. This could result in a denial of service or copy data from memory to the file, resulting in an information leak if the avatar is sent to another user.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
A denial of service vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in an out-of-bounds read. A malicious server or an attacker who intercepts the network traffic can send invalid data to trigger this vulnerability and cause a crash.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
A denial of service vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in a null pointer dereference. A malicious server or an attacker who intercepts the network traffic can send invalid data to trigger this vulnerability and cause a crash.
CVSS
5.9
MEDIUM
Published
Jan 6, 2017
The jabber_idn_validate function in jutil.c in the Jabber protocol plugin in libpurple in Pidgin before 2.10.10 allows remote attackers to obtain sensitive information from process memory via a crafted XMPP message.
CVSS
5.0
UNKNOWN
Published
Oct 29, 2014
Absolute path traversal vulnerability in the untar_block function in win32/untar.c in Pidgin before 2.10.10 on Windows allows remote attackers to write to arbitrary files via a drive name in a tar archive of a smiley theme.
CVSS
6.4
UNKNOWN
Published
Oct 29, 2014
nmevent.c in the Novell GroupWise protocol plugin in libpurple in Pidgin before 2.10.10 allows remote servers to cause a denial of service (application crash) via a crafted server message that triggers a large memory allocation.
CVSS
5.0
UNKNOWN
Published
Oct 29, 2014
markup.c in the MXit protocol plugin in libpurple in Pidgin before 2.10.10 allows remote servers to cause a denial of service (application crash) via a large length value in an emoticon response.
CVSS
5.0
UNKNOWN
Published
Oct 29, 2014
The (1) bundled GnuTLS SSL/TLS plugin and the (2) bundled OpenSSL SSL/TLS plugin in libpurple in Pidgin before 2.10.10 do not properly consider the Basic Constraints extension during verification of X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
CVSS
6.4
UNKNOWN
Published
Oct 29, 2014
The SIMPLE protocol functionality in Pidgin before 2.10.8 allows remote attackers to have an unspecified impact via a negative Content-Length header, which triggers a buffer overflow.
CVSS
10.0
UNKNOWN
Published
Feb 6, 2014
Integer signedness error in the MXit functionality in Pidgin before 2.10.8 allows remote attackers to cause a denial of service (segmentation fault) via a crafted emoticon value, which triggers an integer overflow and a buffer overflow.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
Integer overflow in libpurple/protocols/gg/lib/http.c in the Gadu-Gadu (gg) parser in Pidgin before 2.10.8 allows remote attackers to have an unspecified impact via a large Content-Length value, which triggers a buffer overflow.
CVSS
7.5
UNKNOWN
Published
Feb 6, 2014
Pidgin before 2.10.8 allows remote MSN servers to cause a denial of service (NULL pointer dereference and crash) via a crafted (1) SOAP response, (2) OIM XML response, or (3) Content-Length header.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
libpurple/protocols/yahoo/libymsg.c in Pidgin before 2.10.8 allows remote attackers to cause a denial of service (crash) via a Yahoo! P2P message with a crafted length field, which triggers a buffer over-read.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
The IRC protocol plugin in libpurple in Pidgin before 2.10.8 does not validate argument counts, which allows remote IRC servers to cause a denial of service (application crash) via a crafted message.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
gtkutils.c in Pidgin before 2.10.8 on Windows allows user-assisted remote attackers to execute arbitrary programs via a message containing a file: URL that is improperly handled during construction of an explorer.exe command. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3185.
CVSS
9.3
UNKNOWN
Published
Feb 6, 2014
Buffer overflow in util.c in libpurple in Pidgin before 2.10.8 allows remote HTTP servers to cause a denial of service (application crash) or possibly have unspecified other impact via an invalid chunk-size field in chunked transfer-coding data.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
The STUN protocol implementation in libpurple in Pidgin before 2.10.8 allows remote STUN servers to cause a denial of service (out-of-bounds write operation and application crash) by triggering a socket read error.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
The XMPP protocol plugin in libpurple in Pidgin before 2.10.8 does not properly determine whether the from address in an iq reply is consistent with the to address in an iq request, which allows remote attackers to spoof iq traffic or cause a denial of service (NULL pointer dereference and application crash) via a crafted reply.
CVSS
6.4
UNKNOWN
Published
Feb 6, 2014
util.c in libpurple in Pidgin before 2.10.8 does not properly allocate memory for HTTP responses that are inconsistent with the Content-Length header, which allows remote HTTP servers to cause a denial of service (application crash) via a crafted response.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
gtkimhtml.c in Pidgin before 2.10.8 does not properly interact with underlying library support for wide Pango layouts, which allows user-assisted remote attackers to cause a denial of service (application crash) via a long URL that is examined with a tooltip.
CVSS
4.3
UNKNOWN
Published
Feb 6, 2014
Multiple integer signedness errors in libpurple in Pidgin before 2.10.8 allow remote attackers to cause a denial of service (application crash) via a crafted timestamp value in an XMPP message.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
The Yahoo! protocol plugin in libpurple in Pidgin before 2.10.8 does not properly validate UTF-8 data, which allows remote attackers to cause a denial of service (application crash) via crafted byte sequences.
CVSS
5.0
UNKNOWN
Published
Feb 6, 2014
upnp.c in libpurple in Pidgin before 2.10.7 does not properly terminate long strings in UPnP responses, which allows remote attackers to cause a denial of service (application crash) by leveraging access to the local network.
CVSS
2.9
UNKNOWN
Published
Feb 16, 2013
sametime.c in the Sametime protocol plugin in libpurple in Pidgin before 2.10.7 does not properly terminate long user IDs, which allows remote servers to cause a denial of service (application crash) via a crafted packet.
CVSS
5.0
UNKNOWN
Published
Feb 16, 2013
Buffer overflow in http.c in the MXit protocol plugin in libpurple in Pidgin before 2.10.7 allows remote servers to execute arbitrary code via a long HTTP header.
CVSS
6.8
UNKNOWN
Published
Feb 16, 2013
The MXit protocol plugin in libpurple in Pidgin before 2.10.7 might allow remote attackers to create or overwrite files via a crafted (1) mxit or (2) mxit/imagestrips pathname.
CVSS
5.0
UNKNOWN
Published
Feb 16, 2013
cipher.c in the Cipher API in libpurple in Pidgin before 2.7.10 retains encryption-key data in process memory, which might allow local users to obtain sensitive information by reading a core file or other representation of memory contents.
CVSS
2.1
UNKNOWN
Published
Aug 8, 2012
Buffer overflow in markup.c in the MXit protocol plugin in libpurple in Pidgin before 2.10.5 allows remote attackers to execute arbitrary code via a crafted inline image in a message.
CVSS
7.5
UNKNOWN
Published
Jul 7, 2012
msg.c in the MSN protocol plugin in libpurple in Pidgin before 2.10.4 does not properly handle crafted characters, which allows remote servers to cause a denial of service (application crash) by placing these characters in a text/plain message.
CVSS
5.0
UNKNOWN
Published
Jul 3, 2012
proxy.c in libpurple in Pidgin before 2.10.4 does not properly handle canceled SOCKS5 connection attempts, which allows user-assisted remote authenticated users to cause a denial of service (application crash) via a sequence of XMPP file-transfer requests.
CVSS
3.5
UNKNOWN
Published
Jul 3, 2012
Format string vulnerability in the log_message_cb function in otr-plugin.c in the Off-the-Record Messaging (OTR) pidgin-otr plugin before 3.2.1 for Pidgin might allow remote attackers to execute arbitrary code via format string specifiers in data that generates a log message.
CVSS
7.5
UNKNOWN
Published
May 23, 2012
