CVE Explorer
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 all
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"asterisk","vendor":"asterisk","versions":[{"status":"affected","version":"< 23.2.2"},{"status":"affected","version":"< 22.8.2"},{"status":"affected","version":"< 21.12.1"},{"status":"affected","version":"< 20.18.2"},{"status":"affected","version":"< 20.7-cert9"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:20f54e1ef58ee1aa5974ad6351517d40448ef9b802ffbf7b0041182849bb37ce · sha256:77db5b321fa1a291… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":2,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:20f54e1ef58ee1aa5974ad6351517d40448ef9b802ffbf7b0041182849bb37ce · sha256:77db5b321fa1a291… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-611","description":"CWE-611: Improper Restriction of XML External Entity Reference","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:20f54e1ef58ee1aa5974ad6351517d40448ef9b802ffbf7b0041182849bb37ce · sha256:77db5b321fa1a291… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/asterisk/asterisk/security/advisories/GHSA-85x7-54wr-vh42","tags":["x_refsource_CONFIRM"],"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-85x7-54wr-vh42"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:20f54e1ef58ee1aa5974ad6351517d40448ef9b802ffbf7b0041182849bb37ce · sha256:77db5b321fa1a291… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.