CVE-2026-97336Network attack vectorHinoki check available

Unauthenticated stored XSS via unescaped file_list values

Published Oct 2, 2026 · Updated Oct 2, 2026

Stored XSS in Justin Sternberg CMB2 2.13.0 and earlier lets remote attackers inject scripts into WordPress pages through file_list fields. The file_list field stores submitted attachment URLs and renders them without adequate sanitization or escaping, so injected script executes when an affected page is viewed. Exploitation requires an integrating plugin or theme to expose the field in a public front-end form or a user meta box; CMB2 exposes no such field by default.

CVSS severity7.2
High
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Justin Sternberg CMB2 2.13.0 and earlier lets remote attackers inject scripts into WordPress pages through file_list fields. The file_list field stores submitted attachment URLs and renders them without adequate sanitization or escaping, so injected script executes when an affected page is viewed. Exploitation requires an integrating plugin or theme to expose the field in a public front-end form or a user meta box; CMB2 exposes no such field by default.

The record

CVE
CVE-2026-97336
Published
Oct 2, 2026
Updated
Oct 2, 2026
Vendor
Justin Sternberg
Product
CMB2
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 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 <=2.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Justin Sternberg · CMB2version=0 <=2.13.0

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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.

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

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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