CVE-2024-6296Network attack vector

Stored XSS via unescaped image captions

Published Jun 28, 2024 · Updated Apr 8, 2026

Stored XSS in Stackable 3.13.1 and earlier allows remote authenticated users to inject scripts through an image caption. The frontend image-lightbox code handles the data-caption value without sufficient input sanitization or output escaping, allowing the stored caption to become executable markup. Contributor-level access is required, and the injected script executes whenever a visitor opens the affected page.

CVSS severity6.4
Medium
EPSS probability0.50%
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 Stackable 3.13.1 and earlier allows remote authenticated users to inject scripts through an image caption. The frontend image-lightbox code handles the data-caption value without sufficient input sanitization or output escaping, allowing the stored caption to become executable markup. Contributor-level access is required, and the injected script executes whenever a visitor opens the affected page.

The record

CVE
CVE-2024-6296
Published
Jun 28, 2024
Updated
Apr 8, 2026
Vendor
Gambit Technologies Inc.
Product
Stackable
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.13.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gambit Technologies Inc. · Stackableversion=0 <=3.13.1

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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