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.
936 vulnerabilities reference this CWE, most recent first.
GHSA-XM74-PHC9-JVHX
Vulnerability from github – Published: 2022-05-24 17:10 – Updated: 2023-04-25 18:30A vulnerability has been identified in SCALANCE S602 (All versions >= V3.0), SCALANCE S612 (All versions >= V3.0), SCALANCE S623 (All versions >= V3.0), SCALANCE S627-2M (All versions >= V3.0). The integrated configuration web server of the affected devices could allow Cross-Site Scripting (XSS) attacks if unsuspecting users are tricked into accessing a malicious link. User interaction is required for a successful exploitation. The user must be logged into the web interface in order for the exploitation to succeed. At the stage of publishing this security advisory no public exploitation is known. The vendor has confirmed the vulnerability and provides mitigations to resolve it.
{
"affected": [],
"aliases": [
"CVE-2019-6585"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-03-10T20:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been identified in SCALANCE S602 (All versions \u003e= V3.0), SCALANCE S612 (All versions \u003e= V3.0), SCALANCE S623 (All versions \u003e= V3.0), SCALANCE S627-2M (All versions \u003e= V3.0). The integrated configuration web server of the affected devices could allow Cross-Site Scripting (XSS) attacks if unsuspecting users are tricked into accessing a malicious link. User interaction is required for a successful exploitation. The user must be logged into the web interface in order for the exploitation to succeed. At the stage of publishing this security advisory no public exploitation is known. The vendor has confirmed the vulnerability and provides mitigations to resolve it.",
"id": "GHSA-xm74-phc9-jvhx",
"modified": "2023-04-25T18:30:22Z",
"published": "2022-05-24T17:10:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-6585"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-591405.pdf"
},
{
"type": "WEB",
"url": "https://www.us-cert.gov/ics/advisories/icsa-20-042-10"
}
],
"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-XMFF-C6M5-XM5C
Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-05-26 13:30Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in SpabRice Nyla allows Code Injection.
This issue affects Nyla: from n/a through 1.7.
{
"affected": [],
"aliases": [
"CVE-2026-39642"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-26T09:16:20Z",
"severity": "MODERATE"
},
"details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in SpabRice Nyla allows Code Injection.\n\nThis issue affects Nyla: from n/a through 1.7.",
"id": "GHSA-xmff-c6m5-xm5c",
"modified": "2026-05-26T13:30:55Z",
"published": "2026-05-26T13:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39642"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/nyla/vulnerability/wordpress-nyla-theme-1-7-arbitrary-shortcode-execution-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-XPJ6-JG5Q-M9X4
Vulnerability from github – Published: 2024-04-24 18:30 – Updated: 2026-04-28 21:34Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS vulnerability in Crocoblock JetFormBuilder allows Code Injection.This issue affects JetFormBuilder: from n/a through 3.1.4.
{
"affected": [],
"aliases": [
"CVE-2023-48763"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-24T16:15:08Z",
"severity": "MODERATE"
},
"details": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS vulnerability in Crocoblock JetFormBuilder allows Code Injection.This issue affects JetFormBuilder: from n/a through 3.1.4.",
"id": "GHSA-xpj6-jg5q-m9x4",
"modified": "2026-04-28T21:34:56Z",
"published": "2024-04-24T18:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48763"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/jetformbuilder/wordpress-jetformbuilder-plugin-3-1-4-content-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-XQ4V-VRP9-VCF2
Vulnerability from github – Published: 2022-06-08 22:24 – Updated: 2022-06-08 22:24Impact
DisplayName allows all the characters from users, which leads to an XSS vulnerability when directly displayed in the issue list.
Patches
DisplayName is sanitized before being displayed. Users should upgrade to 0.12.9 or the latest 0.13.0+dev.
Workarounds
Check and update the existing users' display names that contain malicious characters.
References
N/A
For more information
If you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/pull/7009.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "gogs.io/gogs"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.12.9"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-31038"
],
"database_specific": {
"cwe_ids": [
"CWE-79",
"CWE-80"
],
"github_reviewed": true,
"github_reviewed_at": "2022-06-08T22:24:25Z",
"nvd_published_at": "2022-06-09T17:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n`DisplayName` allows all the characters from users, which leads to an XSS vulnerability when directly displayed in the issue list.\n\n### Patches\n`DisplayName` is sanitized before being displayed. Users should upgrade to 0.12.9 or the latest 0.13.0+dev.\n\n### Workarounds\nCheck and update the existing users\u0027 display names that contain malicious characters.\n\n### References\nN/A\n\n### For more information\nIf you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/pull/7009.\n",
"id": "GHSA-xq4v-vrp9-vcf2",
"modified": "2022-06-08T22:24:25Z",
"published": "2022-06-08T22:24:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gogs/gogs/security/advisories/GHSA-xq4v-vrp9-vcf2"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31038"
},
{
"type": "WEB",
"url": "https://github.com/gogs/gogs/pull/7009"
},
{
"type": "WEB",
"url": "https://github.com/gogs/gogs/commit/155cae1de8916fc3fde78f350763034b7422caee"
},
{
"type": "PACKAGE",
"url": "https://github.com/gogs/gogs"
},
{
"type": "WEB",
"url": "https://github.com/gogs/gogs/releases/tag/v0.12.9"
}
],
"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"
}
],
"summary": "Cross-site Scripting vulnerability in repository issue list in Gogs"
}
GHSA-XQ7H-2PX5-Q4QG
Vulnerability from github – Published: 2025-06-19 06:30 – Updated: 2025-06-19 06:30The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's wpdm_user_dashboard shortcode in all versions up to, and including, 3.3.18 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
{
"affected": [],
"aliases": [
"CVE-2025-4367"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-19T04:15:36Z",
"severity": "MODERATE"
},
"details": "The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s wpdm_user_dashboard shortcode in all versions up to, and including, 3.3.18 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.",
"id": "GHSA-xq7h-2px5-q4qg",
"modified": "2025-06-19T06:30:31Z",
"published": "2025-06-19T06:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4367"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/download-manager/trunk/src/User/views/dashboard/profile.php#L79"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/download-manager/trunk/src/wpdm-functions.php#L200"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3313608%40download-manager\u0026old=3308801%40download-manager\u0026sfp_email=\u0026sfph_mail="
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/029956d7-6e3f-4159-9f53-05691e0262fc?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-XWX2-G284-R7J9
Vulnerability from github – Published: 2026-03-04 18:31 – Updated: 2026-03-04 18:31A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall 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 in HTTP requests. An attacker could exploit this vulnerability by persuading a user to follow a link to a malicious website that is 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 VPN web server.
{
"affected": [],
"aliases": [
"CVE-2026-20070"
],
"database_specific": {
"cwe_ids": [
"CWE-80"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-04T18:16:23Z",
"severity": "MODERATE"
},
"details": "A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall 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.\u0026nbsp;\n\nThis vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by persuading a user to follow a link to a malicious website that is 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 VPN web server.",
"id": "GHSA-xwx2-g284-r7j9",
"modified": "2026-03-04T18:31:55Z",
"published": "2026-03-04T18:31:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20070"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-xss-uwjc4HR"
}
],
"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"
}
]
}
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.