What is CVE-2025-31475?

CVE-2025-31475 is a medium-severity vulnerability in Amauri Tarteaucitronjs, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.5/10. Published 2025-04-07.

How severe is CVE-2025-31475?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Prototype Pollution in Amauri Tarteaucitronjs

CVE-2025-31475

tarteaucitron.js is a compliant and accessible cookie banner. A vulnerability was identified in tarteaucitron.js prior to 1.20.1, where the addOrUpdate function, used for applying custom texts, did not properly validate input. This allowed…

Vulnerability class: Prototype Pollution

EPSS: 0.003 (21.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Amauri Tarteaucitronjs
Amauric Tarteaucitron.js — versions < 1.20.1

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-31475?: CVE-2025-31475 is a medium-severity vulnerability in Amauri Tarteaucitronjs, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.5/10. Published 2025-04-07.
How severe is CVE-2025-31475?: Medium severity. CVSS v3 base score is 5.5 out of 10.