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Yot CMS EUVDEUVD-2026-77384

| CVE-2026-90708 MEDIUM
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)
2026-09-14 cna@vuldb.com GHSA-jj9m-58h5-28w9
PHP SQLi
5.5
CVSS 4.0 · Vendor: vuldb
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Severity by source

Vendor (vuldb) PRIMARY
5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
9.1 CRITICAL

Unauthenticated network SQL injection via cookie yields admin session forgery, producing full confidentiality and integrity impact; no DoS component described.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Sep 15, 2026 - 07:15 vuln.today

DescriptionCVE.org

A weakness has been identified in Yot CMS up to 3.3.1. Affected by this vulnerability is the function Login of the file global.php of the component Cookie Handler. This manipulation of the argument yot3_user/yot3_pass causes sql injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

SQL injection in Yot CMS 3.3.x via the Login function in global.php allows remote unauthenticated attackers to supply crafted SQL payloads through the yot3_user and yot3_pass cookie values, bypassing authentication and forging administrator sessions. The researcher-published GitHub PoC (by dddwmr) explicitly demonstrates full admin session forgery as the end result, making the assigned CVSS 5.5 score a material understatement of actual impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires the Yot CMS cookie-based auto-login feature to be active, which is the default behavior of the Login function in global.php processing yot3_user and yot3_pass cookies on each request. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.5 with impact metrics VC:L/VI:L/VA:L appears to significantly understate actual risk: the PoC documentation title explicitly states the vulnerability 'enables forged administrator sessions,' which corresponds to C:H/I:H rather than the low ratings assigned by the reporter. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch or fixed version for Yot CMS has been identified at time of analysis - no advisory or tagged release was referenced in the input. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-77384 vulnerability details – vuln.today
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