CVE-2026-25345Network attack vector

Contributor-level code execution via video poster generation

Published Mar 25, 2026 · Updated Mar 25, 2026

Code injection in GalleryCreator SimpLy Gallery 3.3.2 and earlier allows remote authenticated users to execute code through video poster generation. The poster-generation path creates a WordPress media attachment from submitted frame data without requiring the upload_files capability. Contributor-level access reaches the path; public records do not disclose how attacker-controlled poster data becomes executable server-side.

CVSS severity9.9
Critical
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in GalleryCreator SimpLy Gallery 3.3.2 and earlier allows remote authenticated users to execute code through video poster generation. The poster-generation path creates a WordPress media attachment from submitted frame data without requiring the upload_files capability. Contributor-level access reaches the path; public records do not disclose how attacker-controlled poster data becomes executable server-side.

The record

CVE
CVE-2026-25345
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
GalleryCreator
Product
SimpLy Gallery
Classifications
CWE-1284, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=<= 3.3.2 changes=[{"at":"3.3.2.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GalleryCreator · SimpLy Galleryversion=n/a <=<= 3.3.2 changes=[{"at":"3.3.2.1","status":"unaffected"}]

Published CVSS scores

9.9PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-1284Improper Validation of Specified Quantity in Input
T1059Command and Scripting Interpreter

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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