ghsa-r226-j7pf-48g6
Vulnerability from github
In affected versions, vulnerability-lookup handled user-controlled content in comments and bundles in an unsafe way, which could lead to stored Cross-Site Scripting (XSS).
On the backend, the related_vulnerabilities field of bundles accepted arbitrary strings without format validation or proper sanitization. On the frontend, comment and bundle descriptions were converted from Markdown to HTML and then injected directly into the DOM using string templates and innerHTML. This combination allowed an attacker who could create or edit comments or bundles to store crafted HTML/JavaScript payloads which would later be rendered and executed in the browser of any user visiting the affected profile page (user.html).
This issue affects Vulnerability-Lookup: before 2.18.0.
{
"affected": [],
"aliases": [
"CVE-2025-42620"
],
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-08T13:15:48Z",
"severity": "HIGH"
},
"details": "In affected versions, vulnerability-lookup handled user-controlled \ncontent in comments and bundles in an unsafe way, which could lead to \nstored Cross-Site Scripting (XSS).\n\n\n\n\nOn the backend, the related_vulnerabilities field of bundles accepted \narbitrary strings without format validation or proper sanitization. On \nthe frontend, comment and bundle descriptions were converted from \nMarkdown to HTML and then injected directly into the DOM using string \ntemplates and innerHTML. This combination allowed an attacker who could \ncreate or edit comments or bundles to store crafted HTML/JavaScript \npayloads which would later be rendered and executed in the browser of \nany user visiting the affected profile page (user.html).\u00a0\n\n\n\n\n\n\n\nThis issue affects Vulnerability-Lookup: before 2.18.0.",
"id": "GHSA-r226-j7pf-48g6",
"modified": "2025-12-08T15:30:31Z",
"published": "2025-12-08T15:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-42620"
},
{
"type": "WEB",
"url": "https://vulnerability.circl.lu/vuln/gcve-1-2025-0035"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.