CVE-2026-8310Network attack vector

Browser script execution via reflected input

Published Jul 8, 2026 · Updated Jul 8, 2026

Reflected XSS in Webbeyaz İnternet Hizmetleri Mediküm Web 0 through 08072026 allows remote attackers to run script in a victim's browser. TR-CERT has not disclosed which request parameter or response template reflects attacker-controlled input without context-appropriate output encoding. Exploitation requires a user to open a crafted link; the resulting script can read or alter browser-accessible data within the Mediküm Web origin.

CVSS severity6.1
Medium
EPSS probability0.25%
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 Webbeyaz İnternet Hizmetleri Mediküm Web 0 through 08072026 allows remote attackers to run script in a victim's browser. TR-CERT has not disclosed which request parameter or response template reflects attacker-controlled input without context-appropriate output encoding. Exploitation requires a user to open a crafted link; the resulting script can read or alter browser-accessible data within the Mediküm Web origin.

The record

CVE
CVE-2026-8310
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Webbeyaz İnternet Hizmetleri
Product
Mediküm Web
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Webbeyaz İnternet Hizmetleri · Mediküm Webversion=0 <=08072026

Published CVSS scores

6.1Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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