GHSA-JXJ7-G6GM-49J7
Vulnerability from github – Published: 2026-07-10 16:05 – Updated: 2026-07-10 16:05Summary
tarteaucitron provides a list of cookies and buttons to delete them. If an attacker can write HTML with data attributes, they could create an element that silently deletes a cookie when clicked and trick a user to delete this cookie.
Details
tarteaucitron.cookie.purge() is called on any element with the purgeBtn class. It does not check if the element is a legitimate tarteaucitron button or if the cookie corresponds to a service handled by tarteaucitron.
PoC
<a class="purgeBtn" data-cookie="foo">Click me!</a>
If someone has a cookie with this name and clicks on the link, the cookie is silently deleted.
Impact
The impact is limited because this only works on cookies without HttpOnly=true and the attacker has to know the name of the cookie.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "tarteaucitronjs"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.33.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-49977"
],
"database_specific": {
"cwe_ids": [
"CWE-285"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-10T16:05:00Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Summary\n\ntarteaucitron provides a list of cookies and buttons to delete them. If an attacker can write HTML with data attributes, they could create an element that silently deletes a cookie when clicked and trick a user to delete this cookie.\n\n### Details\n\n`tarteaucitron.cookie.purge()` is called on any element with the `purgeBtn` class. It does not check if the element is a legitimate tarteaucitron button or if the cookie corresponds to a service handled by tarteaucitron.\n\n### PoC\n\n```html\n\u003ca class=\"purgeBtn\" data-cookie=\"foo\"\u003eClick me!\u003c/a\u003e\n```\n\nIf someone has a cookie with this name and clicks on the link, the cookie is silently deleted.\n\n### Impact\n\nThe impact is limited because this only works on cookies without HttpOnly=true and the attacker has to know the name of the cookie.",
"id": "GHSA-jxj7-g6gm-49j7",
"modified": "2026-07-10T16:05:00Z",
"published": "2026-07-10T16:05:00Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7"
},
{
"type": "PACKAGE",
"url": "https://github.com/AmauriC/tarteaucitron.js"
}
],
"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"
}
],
"summary": "tarteaucitron: data-cookie attribute can be used to delete arbitrary cookies"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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