CVE-2026-97347Network attack vector

Unauthenticated stored XSS via User-Agent header

Published Sep 30, 2026 · Updated Sep 30, 2026

Stored XSS in Kazuki Yanamoto Post Views Stats Counter 1.1.7 and earlier allows remote attackers to inject scripts via User-Agent headers. The plugin's bot-substring blacklist accepts crafted User-Agent values, which are stored and later rendered without adequate escaping. An unauthenticated request that avoids the listed substrings plants a script that executes when a user opens an affected page.

CVSS severityUnavailable
Unscored
EPSS probability0.25%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Kazuki Yanamoto Post Views Stats Counter 1.1.7 and earlier allows remote attackers to inject scripts via User-Agent headers. The plugin's bot-substring blacklist accepts crafted User-Agent values, which are stored and later rendered without adequate escaping. An unauthenticated request that avoids the listed substrings plants a script that executes when a user opens an affected page.

The record

CVE
CVE-2026-97347
Published
Sep 30, 2026
Updated
Sep 30, 2026
Vendor
Kazuki Yanamoto
Product
Post Views Stats Counter
Classifications
T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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 <=1.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kazuki Yanamoto · Post Views Stats Counterversion=0 <=1.1.7

Published CVSS scores

No CVSS assessment is available in this record.

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

T1059.007JavaScript

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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