CVE-2026-8315Network attack vector

Stored script execution via undisclosed input handling

Published Jul 8, 2026 · Updated Jul 8, 2026

Stored cross-site scripting in Webbeyaz İnternet Hizmetleri Mediküm Web 0 through 08072026 allows remote authenticated users to inject scripts. The CNA identifies stored XSS but does not disclose the affected input, page, handler, storage location, or output operation that fails to neutralize submitted content. Low-privileged access and a second user's page visit are required, limiting the reported consequence to script execution in that user's browser context.

CVSS severity5.4
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Webbeyaz İnternet Hizmetleri Mediküm Web 0 through 08072026 allows remote authenticated users to inject scripts. The CNA identifies stored XSS but does not disclose the affected input, page, handler, storage location, or output operation that fails to neutralize submitted content. Low-privileged access and a second user's page visit are required, limiting the reported consequence to script execution in that user's browser context.

The record

CVE
CVE-2026-8315
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Webbeyaz İnternet Hizmetleri
Product
Mediküm Web
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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=0 <=08072026

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Webbeyaz İnternet Hizmetleri · Mediküm Webversion=0 <=08072026

Published CVSS scores

5.4Computer Emergency Response Team of the Republic of TurkeyCVSS: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')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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