6.5

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 ast_xml_open() function in xml.c parses XML documents using libxml with unsafe parsing options that enable entity expansion and XInclude processing. Specifically, it invokes xmlReadFile() with the XML_PARSE_NOENT flag and later processes XIncludes via xmlXIncludeProcess().If any untrusted or user-supplied XML file is passed to this function, it can allow an attacker to trigger XML External Entity (XXE) or XInclude-based local file disclosure, potentially exposing sensitive files from the host system. This can also be triggered in other cases in which the user is able to supply input in xml format that triggers the asterisk process to parse it. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.
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Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Sangoma ≫ Asterisk Version < 20.18.2
Sangoma ≫ Asterisk Version >= 21.0.0 < 21.12.1
Sangoma ≫ Asterisk Version >= 22.0.0 < 22.8.2
Sangoma ≫ Asterisk Version >= 23.0.0 < 23.2.2
Sangoma ≫ Certified Asterisk Version <= 18.9
Sangoma ≫ Certified Asterisk Version20.7 Updatecert1
Sangoma ≫ Certified Asterisk Version20.7 Updatecert1-rc1
Sangoma ≫ Certified Asterisk Version20.7 Updatecert1-rc2
Sangoma ≫ Certified Asterisk Version20.7 Updatecert2
Sangoma ≫ Certified Asterisk Version20.7 Updatecert3
Sangoma ≫ Certified Asterisk Version20.7 Updatecert4
Sangoma ≫ Certified Asterisk Version20.7 Updatecert5
Sangoma ≫ Certified Asterisk Version20.7 Updatecert6
Sangoma ≫ Certified Asterisk Version20.7 Updatecert7
Sangoma ≫ Certified Asterisk Version20.7 Updatecert8
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.07% 0.203
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
security-advisories@github.com 2 0.5 1.4
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N
CWE-611 Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.