CVE-2021-21398Network attack vector

Stored XSS via unescaped Grid DataColumn output

Published Mar 30, 2021 · Updated Aug 3, 2024

Cross-site scripting in PrestaShop 1.7.7.0 through 1.7.7.2 allows remote authenticated users to inject HTML through Grid DataColumn output. The shared data.html.twig template applies Twig's raw filter to record[column.options.field], suppressing output escaping for untrusted column values. A back-office user must reach a grid whose DataColumn receives attacker-controlled data, and a victim must view it for injected content to run in that browser.

CVSS severity5.4
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in PrestaShop 1.7.7.0 through 1.7.7.2 allows remote authenticated users to inject HTML through Grid DataColumn output. The shared data.html.twig template applies Twig's raw filter to record[column.options.field], suppressing output escaping for untrusted column values. A back-office user must reach a grid whose DataColumn receives attacker-controlled data, and a victim must view it for injected content to run in that browser.

The record

CVE
CVE-2021-21398
Published
Mar 30, 2021
Updated
Aug 3, 2024
Vendor
PrestaShop
Product
PrestaShop
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.7.7.0, < 1.7.7.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PrestaShop · PrestaShopversion=>= 1.7.7.0, < 1.7.7.3

Published CVSS scores

5.4GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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