CVE-2026-90900Network attack vectorHinoki check available

Unauthorized review posting via missing CSRF validation

Published Sep 23, 2026 · Updated Sep 23, 2026

Cross-site request forgery in JoomShaper EasyStore 1.0.0 through 3.0.0 allows remote attackers to post reviews via a logged-in user's browser. The product.addReview endpoint accepts cross-site submissions because its Session::checkToken request validation was commented out. Exploitation requires a logged-in customer to visit attacker-controlled content, and the resulting review appears under that customer's account.

CVSS severity5.1
Medium
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Cross-site request forgery in JoomShaper EasyStore 1.0.0 through 3.0.0 allows remote attackers to post reviews via a logged-in user's browser. The product.addReview endpoint accepts cross-site submissions because its Session::checkToken request validation was commented out. Exploitation requires a logged-in customer to visit attacker-controlled content, and the resulting review appears under that customer's account.

The record

CVE
CVE-2026-90900
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
JoomShaper
Product
EasyStore
Classifications
CWE-352, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2026Record 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=1.0.0-3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JoomShaper · EasyStoreversion=1.0.0-3.0.0

Published CVSS scores

5.1mySites.guruCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204User Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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