CVE-2026-9677Public exploitNetwork attack vector

Stored script execution via unescaped Info URL

Published Jun 27, 2026 · Updated Jun 27, 2026

Stored XSS in yanniks Shariff for WordPress 1.0.11 and earlier allows remote authenticated users to execute scripts in visitors' browsers. The generateshariff() function places the shariff_infourl setting into a frontend data-info-url attribute without sanitization or output escaping. Administrator access to the plugin settings and a subsequent page visit are required; the flaw remains reachable when unfiltered_html is disabled, including in multisite setups.

CVSS severity4.8
Medium
EPSS probability0.24%
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 yanniks Shariff for WordPress 1.0.11 and earlier allows remote authenticated users to execute scripts in visitors' browsers. The generateshariff() function places the shariff_infourl setting into a frontend data-info-url attribute without sanitization or output escaping. Administrator access to the plugin settings and a subsequent page visit are required; the flaw remains reachable when unfiltered_html is disabled, including in multisite setups.

The record

CVE
CVE-2026-9677
Published
Jun 27, 2026
Updated
Jun 27, 2026
Vendor
yanniks
Product
Shariff for WordPress
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 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 <=1.0.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

yanniks · Shariff for WordPressversion=0 <=1.0.11

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

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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