Common Weakness Enumeration
CWE-611
AllowedImproper Restriction of XML External Entity Reference
Abstraction: Base · Status: Draft
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.
1801 vulnerabilities reference this CWE, most recent first.
CVE-2026-40682 (GCVE-0-2026-40682)
Vulnerability from cvelistv5 – Published: 2026-05-04 16:55 – Updated: 2026-09-02 12:04
VLAI
EPSS
VEX
Title
Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntryPersistor
Summary
XML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor
Versions Affected: before 2.5.9, before 3.0.0-M3
Description: The DictionaryEntryPersistor class initializes a static SAXParserFactory at class-load time without enabling FEATURE_SECURE_PROCESSING or disabling DTD processing. When create(InputStream, EntryInserter) is invoked, the only feature set on the XMLReader is namespace support — external entity resolution and DOCTYPE declarations remain fully enabled. An attacker who can supply a crafted dictionary file (e.g., a stop-word list or domain dictionary) containing a malicious DOCTYPE declaration can trigger local file disclosure via file:// entity references or server-side request forgery via http:// entity references during SAX parsing, before the application processes a single dictionary entry. This is inconsistent with the project's own XmlUtil.createSaxParser() helper, which correctly sets FEATURE_SECURE_PROCESSING and disallow-doctype-decl and is used by all other XML parsing paths in the codebase. The public Dictionary(InputStream) constructor delegates directly to this method and is the documented API for loading user-supplied dictionaries, making untrusted input a realistic scenario.
Mitigation: 2.x users should upgrade to 2.5.9. 3.x users should upgrade to 3.0.0-M3. Users who cannot upgrade immediately should ensure that all dictionary files are sourced from trusted origins and should consider wrapping the Dictionary(InputStream) constructor with input validation that rejects any XML containing a DOCTYPE declaration before it reaches the parser.
Severity
9.1 (Critical)
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 15:01 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/r6jpt0qr9nj67gqhp… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… | |
| https://access.redhat.com/security/cve/CVE-2026-40682 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2466484 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache OpenNLP |
Affected:
2.0 , < 2.5.9
(semver)
Affected: 3.0.0-M1 , < 3.0.0-M3 (semver) Affected: 0 , < 1.9.5 (semver) |
|
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 |
cpe:/a:redhat:camel_spring_boot:4
|
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8
|
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp
|
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai
|
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CVE-2026-34401 (GCVE-0-2026-34401)
Vulnerability from cvelistv5 – Published: 2026-03-31 21:05 – Updated: 2026-04-01 15:53
VLAI
EPSS
VEX
Title
XML Notepad: XML External Entity (XXE) Injection via Unsafe XmlTextReader in XML Diff and Schema Loading
Summary
XML Notepad is a Windows program that provides a simple intuitive User Interface for browsing and editing XML documents. Prior to version 2.9.0.21, XML Notepad does not disable DTD processing by default which means external entities are resolved automatically. There is a well known attack related to malicious DTD files where an attacker to craft a malicious XML file that loads a DTD that causes XML Notepad to make outbound HTTP/SMB requests, potentially leaking local file contents or capturing the victim's NTLM credentials. This issue has been patched in version 2.9.0.21.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-01 15:45 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/microsoft/XmlNotepad/security/… | x_refsource_CONFIRM |
| https://github.com/microsoft/XmlNotepad/commit/36… | x_refsource_MISC |
| https://github.com/microsoft/XmlNotepad/commit/c0… | x_refsource_MISC |
| https://github.com/microsoft/XmlNotepad/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| microsoft | XmlNotepad |
Affected:
< 2.9.0.21
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CVE-2026-33913 (GCVE-0-2026-33913)
Vulnerability from cvelistv5 – Published: 2026-03-25 22:52 – Updated: 2026-03-26 18:08
VLAI
EPSS
VEX
Title
OpenEMR: XInclude Injection in CCDA Import Allows Reading Arbitrary Server Files
Summary
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, an authenticated user with access to the Carecoordination module can upload a crafted CCDA document containing `<xi:include href="file:///etc/passwd" parse="text"/>` to read arbitrary files from the server. Version 8.0.0.3 patches the issue.
Severity
7.7 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 18:08 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openemr/openemr/security/advis… | x_refsource_CONFIRM |
| https://github.com/openemr/openemr/commit/67e1702… | x_refsource_MISC |
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CVE-2026-33737 (GCVE-0-2026-33737)
Vulnerability from cvelistv5 – Published: 2026-04-10 19:05 – Updated: 2026-04-13 16:02
VLAI
EPSS
VEX
Title
Chamilo LMS has an XML External Entity (XXE) Injection
Summary
Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, multiple files use simplexml_load_string() without XXE protection. With LIBXML_NOENT flag, arbitrary server files can be read. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-13 16:01 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/chamilo/chamilo-lms/security/a… | x_refsource_CONFIRM |
| https://github.com/chamilo/chamilo-lms/commit/22b… | x_refsource_MISC |
| https://github.com/chamilo/chamilo-lms/commit/af6… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| chamilo | chamilo-lms |
Affected:
< 1.11.38
Affected: >= 2.0.0-alpha.1, < 2.0.0-RC.3 |
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CVE-2026-32251 (GCVE-0-2026-32251)
Vulnerability from cvelistv5 – Published: 2026-03-12 19:21 – Updated: 2026-03-13 16:15
VLAI
EPSS
VEX
Title
Tolgee has an XXE Injection in Translation Import
Summary
Tolgee is an open-source localization platform. Prior to 3.166.3, the XML parsers used for importing Android XML resources (.xml) and .resx files don't disable external entity processing. An authenticated user who can import translation files into a project can exploit this to read arbitrary files from the server and make server-side requests to internal services. This vulnerability is fixed in 3.166.3.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-13 16:15 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/tolgee/tolgee-platform/securit… | x_refsource_CONFIRM |
| https://github.com/tolgee/tolgee-platform/commit/… | x_refsource_MISC |
| https://github.com/tolgee/tolgee-platform/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tolgee | tolgee-platform |
Affected:
< 3.166.3
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CVE-2026-28809 (GCVE-0-2026-28809)
Vulnerability from cvelistv5 – Published: 2026-03-23 10:09 – Updated: 2026-07-24 14:14
VLAI
EPSS
VEX
Title
XXE in esaml SAML library allows local file read and potential SSRF
Summary
XML External Entity (XXE) vulnerability in esaml (and its forks) allows an attacker to cause the system to read local files and incorporate their contents into processed SAML documents, and potentially perform SSRF via crafted SAML messages.
esaml parses attacker-controlled SAML messages using xmerl_scan:string/2 before signature verification without disabling XML entity expansion. On Erlang/OTP versions before 27, Xmerl allows entities by default, enabling pre-signature XXE attacks. An attacker can cause the host to read local files (e.g., Kubernetes-mounted secrets) into the SAML document. If the attacker is not a trusted SAML SP, signature verification will fail and the document is discarded, but file contents may still be exposed through logs or error messages.
This issue affects all versions of esaml, including forks by arekinath, handnot2, and dropbox. Users running on Erlang/OTP 27 or later are not affected due to Xmerl defaulting to entities disabled.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 15:07 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-28809.html | third-party-advisoryrelated |
| https://osv.dev/vulnerability/EEF-CVE-2026-28809 | related |
| https://github.com/Jump-App/esaml/commit/bab85efd… | patch |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| dropbox | esaml |
cpe:2.3:a:dropbox:esaml:*:*:*:*:*:*:*:*
cpe:2.3:a:arekinath:esaml:*:*:*:*:*:*:*:* cpe:2.3:a:handnot2:esaml:*:*:*:*:*:*:*:* |
|
| arekinath | esaml |
cpe:2.3:a:arekinath:esaml:*:*:*:*:*:*:*:*
|
|
| handnot2 | esaml |
cpe:2.3:a:handnot2:esaml:*:*:*:*:*:*:*:*
|
|
| dropbox | esaml |
cpe:2.3:a:dropbox:esaml:*:*:*:*:*:*:*:*
|
|
| Jump-App | esaml |
Affected:
deeb84378d5c82153b470e99d24f77c38afca14a , < bab85efde7c136911402a881ca55173759467a26
(git)
Unaffected: bab85efde7c136911402a881ca55173759467a26 (git) cpe:2.3:a:jump-app:esaml:*:*:*:*:*:*:*:* |
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CVE-2026-26171 (GCVE-0-2026-26171)
Vulnerability from cvelistv5 – Published: 2026-04-14 16:58 – Updated: 2026-08-14 16:31
VLAI
EPSS
VEX
Title
.NET Denial of Service Vulnerability
Summary
Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-14 18:53 UTC
CWE
Assigner
References
21 references
Impacted products
22 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | .NET 10.0 |
Affected:
10.0.0 , < 10.0.6
(custom)
|
|
| Microsoft | .NET 8.0 |
Affected:
8.0.0 , < 8.0.26
(custom)
|
|
| Microsoft | .NET 9.0 |
Affected:
9.0.0 , < 9.0.15
(custom)
|
|
| Microsoft | PowerShell 7.5 |
Affected:
7.5.0 , < 7.5.6
(custom)
|
|
| Microsoft | PowerShell 7.6 |
Affected:
7.6.0 , < 7.6.1
(custom)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:10.0.106-1.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:8.0.126-1.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:9.0.116-1.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:9.0.116-1.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:8.0.126-1.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:8.0.126-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:10.0.106-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:9.0.116-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:8.0.126-1.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:10.0.106-1.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:9.0.116-1.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:8.0.126-1.el9_4 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:9.0.116-1.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:8.0.126-1.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
10.0.106-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
8.0.126-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
9.0.116-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
Date Public
2026-04-14 14:00
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CVE-2026-24400 (GCVE-0-2026-24400)
Vulnerability from cvelistv5 – Published: 2026-01-26 22:19 – Updated: 2026-01-27 21:36
VLAI
EPSS
VEX
Title
AssertJ has XML External Entity (XXE) vulnerability when parsing untrusted XML via isXmlEqualTo assertion
Summary
AssertJ provides Fluent testing assertions for Java and the Java Virtual Machine (JVM). Starting in version 1.4.0 and prior to version 3.27.7, an XML External Entity (XXE) vulnerability exists in `org.assertj.core.util.xml.XmlStringPrettyFormatter`: the `toXmlDocument(String)` method initializes `DocumentBuilderFactory` with default settings, without disabling DTDs or external entities. This formatter is used by the `isXmlEqualTo(CharSequence)` assertion for `CharSequence` values. An application is vulnerable only when it uses untrusted XML input with either `isXmlEqualTo(CharSequence)` from `org.assertj.core.api.AbstractCharSequenceAssert` or `xmlPrettyFormat(String)` from `org.assertj.core.util.xml.XmlStringPrettyFormatter`. If untrusted XML input is processed by tone of these methods, an attacker couldnread arbitrary local files via `file://` URIs (e.g., `/etc/passwd`, application configuration files); perform Server-Side Request Forgery (SSRF) via HTTP/HTTPS URIs, and/or cause Denial of Service via "Billion Laughs" entity expansion attacks. `isXmlEqualTo(CharSequence)` has been deprecated in favor of XMLUnit in version 3.18.0 and will be removed in version 4.0. Users of affected versions should, in order of preference: replace `isXmlEqualTo(CharSequence)` with XMLUnit, upgrade to version 3.27.7, or avoid using `isXmlEqualTo(CharSequence)` or `XmlStringPrettyFormatter` with untrusted input. `XmlStringPrettyFormatter` has historically been considered a utility for `isXmlEqualTo(CharSequence)` rather than a feature for AssertJ users, so it is deprecated in version 3.27.7 and removed in version 4.0, with no replacement.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 21:36 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/assertj/assertj/security/advis… | x_refsource_CONFIRM |
| https://github.com/assertj/assertj/commit/85ca7eb… | x_refsource_MISC |
| https://cheatsheetseries.owasp.org/cheatsheets/XM… | x_refsource_MISC |
| https://github.com/assertj/assertj/releases/tag/a… | x_refsource_MISC |
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CVE-2026-23795 (GCVE-0-2026-23795)
Vulnerability from cvelistv5 – Published: 2026-02-03 15:14 – Updated: 2026-02-03 16:00
VLAI
EPSS
VEX
Title
Apache Syncope: Console XXE on Keymaster parameters
Summary
Improper Restriction of XML External Entity Reference vulnerability in Apache Syncope Console.
An administrator with adequate entitlements to create or edit Keymaster parameters via Console can construct malicious XML text to launch an XXE attack, thereby causing sensitive data leakage occurs.
This issue affects Apache Syncope: from 3.0 through 3.0.15, from 4.0 through 4.0.3.
Users are recommended to upgrade to version 3.0.16 / 4.0.4, which fix this issue.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 16:00 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Syncope |
Affected:
3.0 , ≤ 3.0.15
(semver)
Affected: 4.0 , ≤ 4.0.3 (semver) |
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CVE-2026-23739 (GCVE-0-2026-23739)
Vulnerability from cvelistv5 – Published: 2026-02-06 16:42 – Updated: 2026-02-06 17:37
VLAI
EPSS
VEX
Title
Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-06 17:36 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/asterisk/asterisk/security/adv… | x_refsource_CONFIRM |
Impacted products
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"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-06T17:36:34.440710Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-06T17:37:22.223Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "asterisk",
"vendor": "asterisk",
"versions": [
{
"status": "affected",
"version": "\u003c 23.2.2"
},
{
"status": "affected",
"version": "\u003c 22.8.2"
},
{
"status": "affected",
"version": "\u003c 21.12.1"
},
{
"status": "affected",
"version": "\u003c 20.18.2"
},
{
"status": "affected",
"version": "\u003c 20.7-cert9"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV3_1": {
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-611",
"description": "CWE-611: Improper Restriction of XML External Entity Reference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-06T16:42:25.816Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"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"
}
],
"source": {
"advisory": "GHSA-85x7-54wr-vh42",
"discovery": "UNKNOWN"
},
"title": "Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-23739",
"datePublished": "2026-02-06T16:42:25.816Z",
"dateReserved": "2026-01-15T15:45:01.957Z",
"dateUpdated": "2026-02-06T17:37:22.223Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Implementation
System Configuration
Many XML parsers and validators can be configured to disable external entity expansion.
CAPEC-221: Data Serialization External Entities Blowup
This attack takes advantage of the entity replacement property of certain data serialization languages (e.g., XML, YAML, etc.) where the value of the replacement is a URI. A well-crafted file could have the entity refer to a URI that consumes a large amount of resources to create a denial of service condition. This can cause the system to either freeze, crash, or execute arbitrary code depending on the URI.