CVE-2021-24349Public exploitNetwork attack vector

Reflected XSS via unsanitized upload filename

Published Jun 14, 2021 · Updated Aug 3, 2024

Cross-site scripting in Dovi42 Gallery from files through 1.6.0 allows remote attackers to execute script in a victim's browser via a crafted upload filename. The upload handler places an unsanitized filename into an error response when an extension is invalid, and the missing CSRF check permits cross-site submission of the upload request. Exploitation requires a victim to process the response, producing browser-side script execution without evidence of server-side code execution.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Dovi42 Gallery from files through 1.6.0 allows remote attackers to execute script in a victim's browser via a crafted upload filename. The upload handler places an unsanitized filename into an error response when an extension is invalid, and the missing CSRF check permits cross-site submission of the upload request. Exploitation requires a victim to process the response, producing browser-side script execution without evidence of server-side code execution.

The record

CVE
CVE-2021-24349
Published
Jun 14, 2021
Updated
Aug 3, 2024
Vendor
Dovi42
Product
Gallery from files
Classifications
CWE-79, CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.6.0 <=1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dovi42 · Gallery from filesversion=1.6.0 <=1.6.0

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

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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