CWE-80
AllowedImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Abstraction: Variant · Status: Incomplete
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.
975 vulnerabilities reference this CWE, most recent first.
GHSA-QF98-J8R3-W7WV
Vulnerability from github – Published: 2025-11-18 09:30 – Updated: 2025-11-18 09:30The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '_veu_custom_css' parameter in all versions up to, and including, 9.112.1. This is due to insufficient input sanitization and output escaping on the user-supplied Custom CSS value. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page.
{
"affected": [],
"aliases": [
"CVE-2025-11267"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-18T08:15:50Z",
"severity": "MODERATE"
},
"details": "The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027_veu_custom_css\u0027 parameter in all versions up to, and including, 9.112.1. This is due to insufficient input sanitization and output escaping on the user-supplied Custom CSS value. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page.",
"id": "GHSA-qf98-j8r3-w7wv",
"modified": "2025-11-18T09:30:51Z",
"published": "2025-11-18T09:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11267"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.112.0.1/admin/class-veu-metabox.php#L178"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.112.0.1/inc/css-customize/css-customize-single.php#L32"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3393317%40vk-all-in-one-expansion-unit%2Ftrunk\u0026old=3385606%40vk-all-in-one-expansion-unit%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/8996a0f0-8a49-4310-917b-62172c12afdb?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QFH3-92RR-375X
Vulnerability from github – Published: 2024-10-23 18:33 – Updated: 2024-10-23 18:33A vulnerability in the VPN web client services feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a browser that is accessing an affected device. This vulnerability is due to improper validation of user-supplied input to application endpoints. An attacker could exploit this vulnerability by persuading a user to follow a link designed to submit malicious input to the affected application. A successful exploit could allow the attacker to execute arbitrary HTML or script code in the browser in the context of the web services page.
{
"affected": [],
"aliases": [
"CVE-2024-20382"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-23T18:15:06Z",
"severity": "MODERATE"
},
"details": "A vulnerability in the VPN web client services feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a browser that is accessing an affected device. This vulnerability is due to improper validation of user-supplied input to application endpoints. An attacker could exploit this vulnerability by persuading a user to follow a link designed to submit malicious input to the affected application. A successful exploit could allow the attacker to execute arbitrary HTML or script code in the browser in the context of the web services page.",
"id": "GHSA-qfh3-92rr-375x",
"modified": "2024-10-23T18:33:09Z",
"published": "2024-10-23T18:33:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20382"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-yjj7ZjVq"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QGV9-W22C-FHGV
Vulnerability from github – Published: 2026-07-15 15:33 – Updated: 2026-07-15 15:33A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via
{
"affected": [],
"aliases": [
"CVE-2026-59838"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-15T14:18:33Z",
"severity": "MODERATE"
},
"details": "A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via \u003cinsert attack vector here\u003e",
"id": "GHSA-qgv9-w22c-fhgv",
"modified": "2026-07-15T15:33:06Z",
"published": "2026-07-15T15:33:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59838"
},
{
"type": "WEB",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-149"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-QH4R-RFFH-PRR5
Vulnerability from github – Published: 2025-03-17 18:31 – Updated: 2025-03-19 21:30Code-projects Online Class and Exam Scheduling System V1.0 is vulnerable to Cross Site Scripting (XSS) in /pages/room.php via the id and rome parameters.
{
"affected": [],
"aliases": [
"CVE-2025-29430"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-17T18:15:22Z",
"severity": "MODERATE"
},
"details": "Code-projects Online Class and Exam Scheduling System V1.0 is vulnerable to Cross Site Scripting (XSS) in /pages/room.php via the id and rome parameters.",
"id": "GHSA-qh4r-rffh-prr5",
"modified": "2025-03-19T21:30:50Z",
"published": "2025-03-17T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-29430"
},
{
"type": "WEB",
"url": "https://github.com/872323857/CVE/blob/main/Online%20Class%20and%20Exam%20Scheduling%20System-room.php.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QHQC-H6CG-HX9P
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2024-04-04 01:16Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80. The impact is: Execute java script code on users browser. The component is: web app. The attack vector is: the victim must open a ticket. The fixed version is: 2.3.1, 2.2.2 and 2.1.3.
{
"affected": [],
"aliases": [
"CVE-2019-1010018"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-16T13:15:00Z",
"severity": "MODERATE"
},
"details": "Zammad GmbH Zammad 2.3.0 and earlier is affected by: Cross Site Scripting (XSS) - CWE-80. The impact is: Execute java script code on users browser. The component is: web app. The attack vector is: the victim must open a ticket. The fixed version is: 2.3.1, 2.2.2 and 2.1.3.",
"id": "GHSA-qhqc-h6cg-hx9p",
"modified": "2024-04-04T01:16:45Z",
"published": "2022-05-24T16:50:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-1010018"
},
{
"type": "WEB",
"url": "https://github.com/zammad/zammad/issues/1869"
},
{
"type": "WEB",
"url": "https://github.com/zammad/zammad/compare/5c983f6...1a9af7d"
},
{
"type": "WEB",
"url": "https://github.com/zammad/zammad/compare/ea50d0c...238784d"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QHX7-FH26-RX4J
Vulnerability from github – Published: 2024-06-11 18:30 – Updated: 2024-06-11 18:30A vulnerability classified as problematic has been found in playSMS up to 1.4.7. Affected is an unknown function of the file /index.php?app=main&inc=feature_schedule&op=list of the component SMS Schedule Handler. The manipulation of the argument name/message leads to basic cross site scripting. It is possible to launch the attack remotely. Upgrading to version 1.4.8 is able to address this issue. The name of the patch is 7a88920f6b536c6a91512e739bcb4e8adefeed2b. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-267912. NOTE: The code maintainer was contacted early about this disclosure and was eager to prepare a fix as quickly as possible.
{
"affected": [],
"aliases": [
"CVE-2024-5851"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-11T18:15:14Z",
"severity": "MODERATE"
},
"details": "A vulnerability classified as problematic has been found in playSMS up to 1.4.7. Affected is an unknown function of the file /index.php?app=main\u0026inc=feature_schedule\u0026op=list of the component SMS Schedule Handler. The manipulation of the argument name/message leads to basic cross site scripting. It is possible to launch the attack remotely. Upgrading to version 1.4.8 is able to address this issue. The name of the patch is 7a88920f6b536c6a91512e739bcb4e8adefeed2b. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-267912. NOTE: The code maintainer was contacted early about this disclosure and was eager to prepare a fix as quickly as possible.",
"id": "GHSA-qhx7-fh26-rx4j",
"modified": "2024-06-11T18:30:50Z",
"published": "2024-06-11T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-5851"
},
{
"type": "WEB",
"url": "https://github.com/playsms/playsms/commit/7a88920f6b536c6a91512e739bcb4e8adefeed2b"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.267912"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.267912"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.347385"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QMPM-VW3W-FPXQ
Vulnerability from github – Published: 2025-05-16 03:30 – Updated: 2025-05-16 03:30IBM Content Navigator 3.0.11, 3.0.15, and 3.1.0 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
{
"affected": [],
"aliases": [
"CVE-2024-51475"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-16T01:15:51Z",
"severity": "MODERATE"
},
"details": "IBM Content Navigator 3.0.11, 3.0.15, and 3.1.0 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim\u0027s Web browser within the security context of the hosting site.",
"id": "GHSA-qmpm-vw3w-fpxq",
"modified": "2025-05-16T03:30:33Z",
"published": "2025-05-16T03:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-51475"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7233695"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QP9C-V274-2239
Vulnerability from github – Published: 2024-06-21 18:30 – Updated: 2024-06-21 18:30Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in gVectors Team wpForo Forum allows Content Spoofing.This issue affects wpForo Forum: from n/a through 2.0.9.
{
"affected": [],
"aliases": [
"CVE-2022-38055"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-21T16:15:10Z",
"severity": "MODERATE"
},
"details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in gVectors Team wpForo Forum allows Content Spoofing.This issue affects wpForo Forum: from n/a through 2.0.9.",
"id": "GHSA-qp9c-v274-2239",
"modified": "2024-06-21T18:30:59Z",
"published": "2024-06-21T18:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38055"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/wpforo/wordpress-wpforo-forum-plugin-2-0-9-auth-html-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QPRW-HC7P-66CJ
Vulnerability from github – Published: 2022-06-13 00:00 – Updated: 2022-06-22 00:00A vulnerability, which was classified as problematic, has been found in Thomson TCW710 ST5D.10.05. This issue affects some unknown processing of the file /goform/wlanPrimaryNetwork. The manipulation of the argument ServiceSetIdentifier with the input >alert(1) as part of POST Request leads to cross site scripting (Persistent). The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
{
"affected": [],
"aliases": [
"CVE-2018-25034"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-12T08:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability, which was classified as problematic, has been found in Thomson TCW710 ST5D.10.05. This issue affects some unknown processing of the file /goform/wlanPrimaryNetwork. The manipulation of the argument ServiceSetIdentifier with the input \u003e\u003cscript\u003ealert(1)\u003c/script\u003e as part of POST Request leads to cross site scripting (Persistent). The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.",
"id": "GHSA-qprw-hc7p-66cj",
"modified": "2022-06-22T00:00:57Z",
"published": "2022-06-13T00:00:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-25034"
},
{
"type": "WEB",
"url": "https://alquimistadesistemas.com/auditando-router-thomson-tcw710"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.126695"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.126695"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QQ8G-MC9V-7PV4
Vulnerability from github – Published: 2024-08-21 06:32 – Updated: 2024-08-21 06:32The Responsive video plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's video settings function in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires responsive videos to be enabled for posts.
{
"affected": [],
"aliases": [
"CVE-2024-7629"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-21T06:15:12Z",
"severity": "MODERATE"
},
"details": "The Responsive video plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s video settings function in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires responsive videos to be enabled for posts.",
"id": "GHSA-qq8g-mc9v-7pv4",
"modified": "2024-08-21T06:32:19Z",
"published": "2024-08-21T06:32:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7629"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/responsive-video/trunk/responsive-video.php#L534"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c530f5d2-eed3-433b-bf96-656593ad6ce2?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. We often encounter data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.
Mitigation MIT-30.1
Strategy: Output Encoding
- Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
- The problem of inconsistent output encodings often arises in web pages. If an encoding is not specified in an HTTP header, web browsers often guess about which encoding is being used. This can open up the browser to subtle XSS attacks.
Mitigation MIT-43
With Struts, write all data from form beans with the bean's filter attribute set to true.
Mitigation MIT-31
Strategy: Attack Surface Reduction
To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is not supported by all browsers. More importantly, XmlHttpRequest and other powerful browser technologies provide read access to HTTP headers, including the Set-Cookie header in which the HttpOnly flag is set.
CAPEC-18: XSS Targeting Non-Script Elements
This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an adversary to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote adversary to collect and interpret the output of said attack.
CAPEC-193: PHP Remote File Inclusion
In this pattern the adversary is able to load and execute arbitrary code remotely available from the application. This is usually accomplished through an insecurely configured PHP runtime environment and an improperly sanitized "include" or "require" call, which the user can then control to point to any web-accessible file. This allows adversaries to hijack the targeted application and force it to execute their own instructions.
CAPEC-32: XSS Through HTTP Query Strings
An adversary embeds malicious script code in the parameters of an HTTP query string and convinces a victim to submit the HTTP request that contains the query string to a vulnerable web application. The web application then procedes to use the values parameters without properly validation them first and generates the HTML code that will be executed by the victim's browser.
CAPEC-86: XSS Through HTTP Headers
An adversary exploits web applications that generate web content, such as links in a HTML page, based on unvalidated or improperly validated data submitted by other actors. XSS in HTTP Headers attacks target the HTTP headers which are hidden from most users and may not be validated by web applications.