tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies

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Summary

CVECVE-2026-49977
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-17 21:17:06 UTC
Updated2026-07-20 19:17:24 UTC
Descriptiontarteaucitron.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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS: 0.003490000 probability, percentile 0.272480000 (date 2026-07-20)

Problem Types: CWE-285 | CWE-285 CWE-285: Improper Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA AmauriC Tarteaucitron.js affected < 1.33.0 Not specified

References

ReferenceSourceLinkTags
www.drupal.org/sa-contrib-2026-040 af854a3a-2127-422b-91ae-364da2661108 www.drupal.org
github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0 [email protected] github.com
github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7 [email protected] github.com
github.com/AmauriC/tarteaucitron.js/commit/24b5464400ae2ff1ad96a092c629b... [email protected] github.com
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