CVE-2026-9280Network attack vector

Reflected XSS via unescaped iframe URL parameters

Published Jun 6, 2026 · Updated Jun 6, 2026

Reflected XSS in Ad Inserter 2.8.15 and earlier allows remote attackers to execute arbitrary scripts through crafted URL parameters. The iframe-mode response writes attacker-controlled URL parameters into generated page output without sufficient sanitization or context-appropriate escaping. At least one displayed ad block must have the non-default AI_OPTION_IFRAME setting enabled, and a user must open the crafted link; script execution occurs in that user's browser.

CVSS severity6.1
Medium
EPSS probability0.36%
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 Ad Inserter 2.8.15 and earlier allows remote attackers to execute arbitrary scripts through crafted URL parameters. The iframe-mode response writes attacker-controlled URL parameters into generated page output without sufficient sanitization or context-appropriate escaping. At least one displayed ad block must have the non-default AI_OPTION_IFRAME setting enabled, and a user must open the crafted link; script execution occurs in that user's browser.

The record

CVE
CVE-2026-9280
Published
Jun 6, 2026
Updated
Jun 6, 2026
Vendor
Igor Funa
Product
Ad Inserter
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 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 <=2.8.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Igor Funa · Ad Inserterversion=0 <=2.8.15

Published CVSS scores

6.1WordfenceCVSS: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.

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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')
T1203Exploitation for Client 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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