CVE-2026-23740

Asterisk contains a local privilege escalation flaw: if ast_coredumper writes gdb init/output to a world-writable directory (e.g., /tmp), a local attacker with write access to that directory can cause arbitrary commands to execute as root or overwrite files by manipulating the gdb init and output...

EUVD-2026-5617

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when astcoredumper writes its gdb init and output files to a directory that is world-writable for example /tmp, an attacker with write permissionwhich is a...

CVE-2026-23740 Asterisk vulnerable to potential privilege escalation

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when astcoredumper writes its gdb init and output files to a directory that is world-writable for example /tmp, an attacker with write permissionwhich is a...

CVE-2026-23740

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when astcoredumper writes its gdb init and output files to a directory that is world-writable for example /tmp, an attacker with write permissionwhich is a...

CVE-2026-23739

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

CVE-2026-23739

CVE-2026-23739 concerns Asterisk’s ast_xml_open() in xml.c, which parses XML using libxml with unsafe options (XML_PARSE_NOENT) and later processes XIncludes, enabling external entity processing. If untrusted XML is provided, this can trigger XML External Entity (XXE) or XInclude-based local file...

CVE-2026-23739 Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

CVE-2026-23739 Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

EUVD-2026-5646

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

CVE-2026-23739 Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

CVE-2026-23739

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

CVE-2026-23739

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the astxmlopen function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing...

CVE-2026-23738 The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...

CVE-2026-23738

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...

EUVD-2026-5645

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...

CVE-2026-23738 The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...

CVE-2026-23738

CVE-2026-23738 affects Asterisk; prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user-supplied cookie/GET parameter values are echoed into the HTML of the /httpstatus page without escaping, enabling reflected XSS. The issue is mitigated by upgrading to the patched series (20.7...

CVE-2026-23738 The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...

CVE-2026-23738

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...

CVE-2026-23738

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using aststrappend. The...