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PrestaShop affected by time based enumeration in FO login form

Moderate severity GitHub Reviewed Published Feb 3, 2026 in PrestaShop/PrestaShop • Updated Feb 6, 2026

Package

composer prestashop/prestashop (Composer)

Affected versions

>= 9.0.0-alpha.1, < 9.0.3
< 8.2.4

Patched versions

9.0.3
8.2.4

Description

Impact

A time-based user enumeration vulnerability in the user authentication functionality of PrestaShop. This vulnerability allows an attacker to determine whether a customer account exists in the system by measuring response times.

Patches

8.2.4 and 9.0.3

Workarounds

none

References

Found by Lam Yiu Tung

References

@kpodemski kpodemski published to PrestaShop/PrestaShop Feb 3, 2026
Published to the GitHub Advisory Database Feb 3, 2026
Reviewed Feb 3, 2026
Published by the National Vulnerability Database Feb 6, 2026
Last updated Feb 6, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(13th percentile)

Weaknesses

Observable Timing Discrepancy

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. Learn more on MITRE.

CVE ID

CVE-2026-25597

GHSA ID

GHSA-67v7-3g49-mxh2

Source code

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