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CVE-2026-49977— tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies

Quick assessment

Affected
AmauriC tarteaucitron.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AmauriC tarteaucitron.js是AmauriC个人开发者的一款浏览器弹窗隐私管理组件。 AmauriC tarteaucitron.js 1.33.0之前版本存在授权问题漏洞，该漏洞源于tarteaucitron.cookie.purge()函数未验证调用元素是否为合法按钮或cookie是否由tarteaucitron管理，导致攻击者通过写入带有data属性的HTML元素，在用户点击时静默删除已知名称的非HttpOnly cookie。

CVSS 4.3 · Medium EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1561.003

Affected Version Matrix 1

VendorProduct Version RangeStatus
AmauriC tarteaucitron.js < 1.33.0 affected
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I. Basic Information for CVE-2026-49977

Vulnerability Information
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Vulnerability Title
tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
AmauriC tarteaucitron.js 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AmauriC tarteaucitron.js是AmauriC个人开发者的一款浏览器弹窗隐私管理组件。 AmauriC tarteaucitron.js 1.33.0之前版本存在授权问题漏洞，该漏洞源于tarteaucitron.cookie.purge()函数未验证调用元素是否为合法按钮或cookie是否由tarteaucitron管理，导致攻击者通过写入带有data属性的HTML元素，在用户点击时静默删除已知名称的非HttpOnly cookie。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AmauriC tarteaucitron.js < 1.33.0 -

II. Public POCs for CVE-2026-49977

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III. Intelligence Information for CVE-2026-49977

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Patches & Fixes for CVE-2026-49977 (1)

Vendor Advisories for CVE-2026-49977 (1)

Other References for CVE-2026-49977 (1)

IV. Related Vulnerabilities

Same product: tarteaucitron.js
Same vendor: AmauriC
Same weakness: CWE-285

V. Comments for CVE-2026-49977

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