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.
1821 vulnerabilities reference this CWE, most recent first.
GHSA-7358-GHCM-C3FF
Vulnerability from github – Published: 2022-09-13 00:00 – Updated: 2022-09-16 00:00Improper Restriction of XML External Entity Reference ('XXE') vulnerability in the Policy Engine of Forcepoint Data Loss Prevention (DLP), which is also leveraged by Forcepoint One Endpoint (F1E), Web Security Content Gateway, Email Security with DLP enabled, and Cloud Security Gateway prior to June 20, 2022. The XML parser in the Policy Engine was found to be improperly configured to support external entities and external DTD (Document Type Definitions), which can lead to an XXE attack. This issue affects: Forcepoint Data Loss Prevention (DLP) versions prior to 8.8.2. Forcepoint One Endpoint (F1E) with Policy Engine versions prior to 8.8.2. Forcepoint Web Security Content Gateway versions prior to 8.5.5. Forcepoint Email Security with DLP enabled versions prior to 8.5.5. Forcepoint Cloud Security Gateway prior to June 20, 2022.
{
"affected": [],
"aliases": [
"CVE-2022-1700"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-12T19:15:00Z",
"severity": "CRITICAL"
},
"details": "Improper Restriction of XML External Entity Reference (\u0027XXE\u0027) vulnerability in the Policy Engine of Forcepoint Data Loss Prevention (DLP), which is also leveraged by Forcepoint One Endpoint (F1E), Web Security Content Gateway, Email Security with DLP enabled, and Cloud Security Gateway prior to June 20, 2022. The XML parser in the Policy Engine was found to be improperly configured to support external entities and external DTD (Document Type Definitions), which can lead to an XXE attack. This issue affects: Forcepoint Data Loss Prevention (DLP) versions prior to 8.8.2. Forcepoint One Endpoint (F1E) with Policy Engine versions prior to 8.8.2. Forcepoint Web Security Content Gateway versions prior to 8.5.5. Forcepoint Email Security with DLP enabled versions prior to 8.5.5. Forcepoint Cloud Security Gateway prior to June 20, 2022.",
"id": "GHSA-7358-ghcm-c3ff",
"modified": "2022-09-16T00:00:33Z",
"published": "2022-09-13T00:00:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1700"
},
{
"type": "WEB",
"url": "https://help.forcepoint.com/security/CVE/CVE-2022-1700.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-73F3-RQQF-2J54
Vulnerability from github – Published: 2026-02-03 18:30 – Updated: 2026-02-03 19:53Improper 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.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.syncope.client.idrepo:syncope-client-idrepo-console"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.16"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.syncope.client.idrepo:syncope-client-idrepo-console"
},
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-23795"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-03T19:53:38Z",
"nvd_published_at": "2026-02-03T16:16:13Z",
"severity": "MODERATE"
},
"details": "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.\n\nThis issue affects Apache Syncope: from 3.0 through 3.0.15, from 4.0 through 4.0.3.\n\nUsers are recommended to upgrade to version 3.0.16 / 4.0.4, which fix this issue.",
"id": "GHSA-73f3-rqqf-2j54",
"modified": "2026-02-03T19:53:38Z",
"published": "2026-02-03T18:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23795"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/syncope"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/mzgbdn8hzk8vr94o660njcc7w62c2pos"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/02/02/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Apache Syncope: Console XXE on Keymaster parameters"
}
GHSA-744R-VV2G-2X6G
Vulnerability from github – Published: 2019-12-02 18:17 – Updated: 2021-06-15 17:22The XMLFileLookupService in NiFi versions 1.3.0 to 1.9.2 allowed trusted users to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE) and reveal information such as the versions of Java, Jersey, and Apache that the NiFI instance uses.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.nifi:nifi-security"
},
"ranges": [
{
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.10.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.nifi:nifi"
},
"ranges": [
{
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.10.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-10080"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": true,
"github_reviewed_at": "2019-12-02T17:27:21Z",
"nvd_published_at": "2019-11-19T22:15:00Z",
"severity": "MODERATE"
},
"details": "The XMLFileLookupService in NiFi versions 1.3.0 to 1.9.2 allowed trusted users to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE) and reveal information such as the versions of Java, Jersey, and Apache that the NiFI instance uses.",
"id": "GHSA-744r-vv2g-2x6g",
"modified": "2021-06-15T17:22:36Z",
"published": "2019-12-02T18:17:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10080"
},
{
"type": "WEB",
"url": "https://github.com/apache/nifi/pull/3507"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b@%3Ccommits.nifi.apache.org%3E"
},
{
"type": "WEB",
"url": "https://nifi.apache.org/security.html#CVE-2019-10080"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Apache NiFi information disclosure by XXE"
}
GHSA-74F5-7PJW-4CGF
Vulnerability from github – Published: 2022-05-14 01:37 – Updated: 2022-05-14 01:37In Traccar Server version 4.2, protocol/SpotProtocolDecoder.java might allow XXE attacks.
{
"affected": [],
"aliases": [
"CVE-2019-5748"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-01-09T17:29:00Z",
"severity": "CRITICAL"
},
"details": "In Traccar Server version 4.2, protocol/SpotProtocolDecoder.java might allow XXE attacks.",
"id": "GHSA-74f5-7pjw-4cgf",
"modified": "2022-05-14T01:37:57Z",
"published": "2022-05-14T01:37:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5748"
},
{
"type": "WEB",
"url": "https://github.com/traccar/traccar/commit/d7f6c53fd88635885914013649b6807ec53227bf"
},
{
"type": "WEB",
"url": "https://www.traccar.org/blog"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-74G4-5HCH-J7RM
Vulnerability from github – Published: 2022-05-24 19:09 – Updated: 2022-05-24 19:09XML External Entity vulnerability in Micro Focus Verastream Host Integrator, affecting version 7.8 Update 1 and earlier versions. The vulnerability could allow the control of web browser and hijacking user sessions.
{
"affected": [],
"aliases": [
"CVE-2021-22523"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-22T12:15:00Z",
"severity": "HIGH"
},
"details": "XML External Entity vulnerability in Micro Focus Verastream Host Integrator, affecting version 7.8 Update 1 and earlier versions. The vulnerability could allow the control of web browser and hijacking user sessions.",
"id": "GHSA-74g4-5hch-j7rm",
"modified": "2022-05-24T19:09:02Z",
"published": "2022-05-24T19:09:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22523"
},
{
"type": "WEB",
"url": "https://support.microfocus.com/kb/doc.php?id=7025169"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-756F-MJWR-H9X4
Vulnerability from github – Published: 2022-05-14 03:31 – Updated: 2022-05-14 03:31textpattern version version 4.6.2 contains a XML Injection vulnerability in Import XML feature that can result in Denial of service in context to the web server by exhausting server memory resources. This attack appear to be exploitable via Uploading a specially crafted XML file.
{
"affected": [],
"aliases": [
"CVE-2018-1000090"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-03-13T15:29:00Z",
"severity": "HIGH"
},
"details": "textpattern version version 4.6.2 contains a XML Injection vulnerability in Import XML feature that can result in Denial of service in context to the web server by exhausting server memory resources. This attack appear to be exploitable via Uploading a specially crafted XML file.",
"id": "GHSA-756f-mjwr-h9x4",
"modified": "2022-05-14T03:31:37Z",
"published": "2022-05-14T03:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000090"
},
{
"type": "WEB",
"url": "https://github.com/textpattern/textpattern/issues/1141"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-7579-Q6RQ-WF6R
Vulnerability from github – Published: 2022-05-24 19:16 – Updated: 2022-05-24 19:16Apache OpenOffice has a dependency on expat software. Versions prior to 2.1.0 were subject to CVE-2013-0340 a "Billion Laughs" entity expansion denial of service attack and exploit via crafted XML files. ODF files consist of a set of XML files. All versions of Apache OpenOffice up to 4.1.10 are subject to this issue. expat in version 4.1.11 is patched.
{
"affected": [],
"aliases": [
"CVE-2021-40439"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-10-07T16:15:00Z",
"severity": "MODERATE"
},
"details": "Apache OpenOffice has a dependency on expat software. Versions prior to 2.1.0 were subject to CVE-2013-0340 a \"Billion Laughs\" entity expansion denial of service attack and exploit via crafted XML files. ODF files consist of a set of XML files. All versions of Apache OpenOffice up to 4.1.10 are subject to this issue. expat in version 4.1.11 is patched.",
"id": "GHSA-7579-q6rq-wf6r",
"modified": "2022-05-24T19:16:54Z",
"published": "2022-05-24T19:16:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40439"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r41eca5f4f09e74436cbb05dec450fc2bef37b5d3e966aa7cc5fada6d@%3Cannounce.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rfb2c193360436e230b85547e85a41bea0916916f96c501f5b6fc4702%40%3Cusers.openoffice.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rfb2c193360436e230b85547e85a41bea0916916f96c501f5b6fc4702@%3Cusers.openoffice.apache.org%3E"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2021/10/07/4"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-757M-6669-CRWX
Vulnerability from github – Published: 2026-09-16 21:32 – Updated: 2026-09-16 21:32A vulnerability in an API of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read specific files on the underlying operating system of an affected device.
This vulnerability is due to improper restriction of XML external entity references. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to read specific files on the affected system that the underlying process has permission to access.
{
"affected": [],
"aliases": [
"CVE-2026-76446"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-16T21:17:20Z",
"severity": "MODERATE"
},
"details": "A vulnerability in an API of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read specific\u0026nbsp;files on the underlying operating system of an affected device.\n\nThis vulnerability is due to improper restriction of XML external entity references. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to read specific\u0026nbsp;files on the affected system that the underlying process has permission to access.",
"id": "GHSA-757m-6669-crwx",
"modified": "2026-09-16T21:32:51Z",
"published": "2026-09-16T21:32:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76446"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multiauth-bypass-sgD2HbL4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-75P2-HGW4-G7F7
Vulnerability from github – Published: 2022-05-24 17:12 – Updated: 2023-09-26 20:43AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Autoupdater.NET.Official"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-20627"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-18T22:29:18Z",
"nvd_published_at": "2020-03-23T17:15:00Z",
"severity": "CRITICAL"
},
"details": "AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.",
"id": "GHSA-75p2-hgw4-g7f7",
"modified": "2023-09-26T20:43:47Z",
"published": "2022-05-24T17:12:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20627"
},
{
"type": "WEB",
"url": "https://github.com/ravibpatel/AutoUpdater.NET/commit/1dc25f2bea6ea522dbac1512b5563c4746d539c3"
},
{
"type": "PACKAGE",
"url": "https://github.com/ravibpatel/AutoUpdater.NET"
},
{
"type": "WEB",
"url": "https://github.com/ravibpatel/AutoUpdater.NET/releases/tag/v1.5.8"
},
{
"type": "WEB",
"url": "https://www.doyler.net/security-not-included/autoupdater-net-vulnerability"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "AutoUpdater.NET allows XXE"
}
GHSA-75VW-3M5V-FPRH
Vulnerability from github – Published: 2022-01-21 23:43 – Updated: 2026-04-14 23:55corenlp is vulnerable to Improper Restriction of XML External Entity Reference
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.3.2"
},
"package": {
"ecosystem": "Maven",
"name": "edu.stanford.nlp:stanford-corenlp"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-0239"
],
"database_specific": {
"cwe_ids": [
"CWE-611"
],
"github_reviewed": true,
"github_reviewed_at": "2022-01-19T15:02:11Z",
"nvd_published_at": "2022-01-17T07:15:00Z",
"severity": "CRITICAL"
},
"details": "corenlp is vulnerable to Improper Restriction of XML External Entity Reference",
"id": "GHSA-75vw-3m5v-fprh",
"modified": "2026-04-14T23:55:03Z",
"published": "2022-01-21T23:43:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0239"
},
{
"type": "WEB",
"url": "https://github.com/stanfordnlp/CoreNLP/pull/1242"
},
{
"type": "WEB",
"url": "https://github.com/stanfordnlp/CoreNLP/commit/f44e693882812b144e09d39850177ff0a1f8d16f"
},
{
"type": "WEB",
"url": "https://github.com/stanfordnlp/corenlp/commit/1940ffb938dc4f3f5bc5f2a2fd8b35aabbbae3dd"
},
{
"type": "PACKAGE",
"url": "https://github.com/stanfordnlp/corenlp"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/a717aec2-5646-4a5f-ade0-dadc25736ae3"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-JAVA-EDUSTANFORDNLP-2342121"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "corenlp is vulnerable to Improper Restriction of XML External Entity Reference"
}
Mitigation
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.