CVE-2020-27478Public exploitNetwork attack vector

Browser script execution via raw search rendering

Published Apr 30, 2024 · Updated Aug 4, 2024

Reflected XSS in SimplCommerce allows remote attackers to execute scripts in a shopper’s browser through a crafted product search. The search-results Index.cshtml view passes the user-controlled search term directly to Html.Raw, so Razor emits attacker-supplied markup without encoding or sanitization. No authentication is required, but a user must open the crafted search; the script then runs in the storefront origin and can read page data or act with that user’s session.

CVSS severity7.1
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in SimplCommerce allows remote attackers to execute scripts in a shopper’s browser through a crafted product search. The search-results Index.cshtml view passes the user-controlled search term directly to Html.Raw, so Razor emits attacker-supplied markup without encoding or sanitization. No authentication is required, but a user must open the crafted search; the script then runs in the storefront origin and can read page data or act with that user’s session.

The record

CVE
CVE-2020-27478
Published
Apr 30, 2024
Updated
Aug 4, 2024
Vendor
SimplCommerce
Product
SimplCommerce
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=40734964b0811f3cbaf64b6dac261683d256f961 <=3103357200c70b4767986544e01b19dbf11505a7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SimplCommerce · SimplCommerceversion=40734964b0811f3cbaf64b6dac261683d256f961 <=3103357200c70b4767986544e01b19dbf11505a7

Published CVSS scores

7.1CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

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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