Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
11 results
Oct 7, 2026A heap-based buffer overflow flaw was found in Cyrus SASL.CVE-2026-107161 · Other software · Red Hat · reported by Red HatHigh 7.5
A heap-based buffer overflow flaw was found in Cyrus SASL. The add_to_challenge() function in the DIGEST-MD5 plugin computes the size of the buffer needed for a challenge/response field before DIGEST-MD5 quoting is applied, but does not recompute that size when quoting (escaping special characters) makes the value longer. The under-sized buffer is then passed to strcat(), causing a heap-based out-of-bounds write whose size depends on attacker-controlled input. A malicious or on-path DIGEST-MD5 (or HTTP Digest) server can trigger this flaw in a connecting client by supplying a crafted challenge field, such as realm or nonce, most likely resulting in a crash of the client application.
- Product
- Red Hat Enterprise Linux 10
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.combugzilla.redhat.com
May 6, 2026The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authenCVE-2026-6691 · Other software · MongoDB Inc. · reported by cna@mongodb.comHigh 8.6
The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authentication or network traffic. This may be triggered by passing untrusted input in the username of a MongoDB URI with authMechanism=GSSAPI.
- Product
- MongoDB C Driver
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 24, 2022In Cyrus SASL 2.1.17 through 2.1.27 before 2.1.28, plugins/sql.c does not escape the password for a SQL INSERT or UPDATE statement.CVE-2022-24407 · Other software · Siemens · reported by MITREHigh 8.8
In Cyrus SASL 2.1.17 through 2.1.27 before 2.1.28, plugins/sql.c does not escape the password for a SQL INSERT or UPDATE statement.
- Product
- SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comgithub.com
Dec 19, 2019cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet.CVE-2019-19906 · Other software · Siemens · reported by MITREHigh 7.5
cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.
- Product
- SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordseclists.orgseclists.org
May 5, 2016The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, aCVE-2016-2167 · Websites & servers · Apache · reported by Red HatMedium 6.8
The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.
- Product
- Subversion
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.fedoraproject.orglists.opensuse.org
Oct 26, 2013Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 aCVE-2013-4122 · Other software · CMU · reported by Red HatMedium 4.3
Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later, which allows remote attackers to cause a denial of service (thread crash and consumption) via (1) an invalid salt or, when FIPS-140 is enabled, a (2) DES or (3) MD5 encrypted password, which triggers a NULL pointer dereference.
- Product
- Cyrus-sasl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.cyrusimap.orgsecurity.gentoo.org
May 13, 2011The SMTP server in Postfix before 2.5.13, 2.6.x before 2.6.10, 2.7.x before 2.7.4, and 2.8.x before 2.8.3, when certain Cyrus SASL authentication methods are enCVE-2011-1720 · Other software · Postfix · reported by MITREMedium 6.8
The SMTP server in Postfix before 2.5.13, 2.6.x before 2.6.10, 2.7.x before 2.7.4, and 2.8.x before 2.8.3, when certain Cyrus SASL authentication methods are enabled, does not create a new server handle after client authentication fails, which allows remote attackers to cause a denial of service (heap memory corruption and daemon crash) or possibly execute arbitrary code via an invalid AUTH command with one method followed by an AUTH command with a different method.
- Product
- Postfix
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.juniper.netlists.opensuse.org
May 15, 2009Multiple buffer overflows in the CMU Cyrus SASL library before 2.1.23 might allow remote attackers to execute arbitrary code or cause a denial of service (appliCVE-2009-0688 · Other software · Carnegie Mellon University · reported by cret@cert.orgHigh 7.5
Multiple buffer overflows in the CMU Cyrus SASL library before 2.1.23 might allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via strings that are used as input to the sasl_encode64 function in lib/saslutil.c.
- Product
- Cyrus-sasl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordftp.andrew.cmu.edulists.apple.com
Dec 31, 2002SQL injection vulnerability in the LDAP and MySQL authentication patch for Cyrus SASL 1.5.24 and 1.5.27 allows remote attackers to execute arbitrary SQL commandCVE-2002-2043 · Other software · Cyrus · reported by MITREHigh 7.5
SQL injection vulnerability in the LDAP and MySQL authentication patch for Cyrus SASL 1.5.24 and 1.5.27 allows remote attackers to execute arbitrary SQL commands and log in as arbitrary POP mail users via the password.
- Product
- Sasl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comiss.net
Dec 18, 2002Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1CVE-2002-1347 · Other software · Cyrusimap · reported by MITRECritical 9.8
Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) long inputs during user name canonicalization, (2) characters that need to be escaped during LDAP authentication using saslauthd, or (3) an off-by-one error in the log writer, which does not allocate space for the null character that terminates a string.
- Product
- Cyrus Sasl
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comdistro.conectiva.com
Dec 21, 2001Format string vulnerability in the default logging callback function _sasl_syslog in common.c in Cyrus SASL library (cyrus-sasl) may allow remote attackers to eCVE-2001-0869 · Other software · Caldera · reported by MITREHigh 7.5
Format string vulnerability in the default logging callback function _sasl_syslog in common.c in Cyrus SASL library (cyrus-sasl) may allow remote attackers to execute arbitrary commands.
- Product
- Openlinux Workstation
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordftp.freebsd.orgdistro.conectiva.com.br
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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