CVE-2026-49977 (GCVE-0-2026-49977)

Vulnerability from cvelistv5 – Published: 2026-07-17 20:21 – Updated: 2026-07-17 20:23
VLAI
Title
tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies
Summary
tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.33.0, tarteaucitron.cookie.purge() is called on any element with the purgeBtn class and does not check whether the element is a legitimate tarteaucitron button or whether the cookie corresponds to a service handled by tarteaucitron. If an attacker can write HTML with data attributes, an element with data-cookie can silently delete a non-HttpOnly cookie with a known name when clicked by a user. This issue is fixed in version 1.33.0.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
AmauriC tarteaucitron.js Affected: < 1.33.0
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    "cna": {
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        }
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      "metrics": [
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            "attackVector": "NETWORK",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
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            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
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          "descriptions": [
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              "description": "CWE-285: Improper Authorization",
              "lang": "en",
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        "dateUpdated": "2026-07-17T20:21:21.476Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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          "name": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7",
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          "tags": [
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          "url": "https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0"
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      "source": {
        "advisory": "GHSA-jxj7-g6gm-49j7",
        "discovery": "UNKNOWN"
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      "title": "tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies"
    }
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    "datePublished": "2026-07-17T20:21:21.476Z",
    "dateReserved": "2026-06-02T18:30:51.281Z",
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    "state": "PUBLISHED"
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.