CVE-2026-8847Network attack vector

Stored XSS via unescaped shortcode iframe source

Published May 27, 2026 · Updated May 27, 2026

Stored XSS in Mehran Shomali Dideo 1.0 allows remote authenticated users to inject scripts through the dideo shortcode. The dideo() handler places the unescaped id attribute directly into an iframe src value, so crafted shortcode content persists in a page. Contributor-level access is required to store the payload, which executes in the browser of any user who opens the injected page.

CVSS severity6.4
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Mehran Shomali Dideo 1.0 allows remote authenticated users to inject scripts through the dideo shortcode. The dideo() handler places the unescaped id attribute directly into an iframe src value, so crafted shortcode content persists in a page. Contributor-level access is required to store the payload, which executes in the browser of any user who opens the injected page.

The record

CVE
CVE-2026-8847
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Mehran Shomali
Product
Dideo
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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 <=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mehran Shomali · Dideoversion=0 <=1.0

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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')
T1203Exploitation for Client Execution

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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