CVE-2026-87973Network attack vector

Editor-to-admin script execution via conversion-name XSS

Published Oct 1, 2026 · Updated Oct 1, 2026

Stored XSS in If-So Dynamic Content 1.9.9 through 1.10.1 allows remote authenticated users to run script in a higher-privileged user's session. The plugin stores conversion names without sanitizing them and renders them on the analytics page without escaping embedded JavaScript. Exploitation requires editor-level access and a higher-privileged user to open that page; the script then runs in the viewer's browser session.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
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 If-So Dynamic Content 1.9.9 through 1.10.1 allows remote authenticated users to run script in a higher-privileged user's session. The plugin stores conversion names without sanitizing them and renders them on the analytics page without escaping embedded JavaScript. Exploitation requires editor-level access and a higher-privileged user to open that page; the script then runs in the viewer's browser session.

The record

CVE
CVE-2026-87973
Published
Oct 1, 2026
Updated
Oct 1, 2026
Vendor
If-So Dynamic Content
Product
If-So Dynamic Content
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 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=1.9.9 <1.10.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

If-So Dynamic Content · If-So Dynamic Contentversion=1.9.9 <1.10.2

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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