CVE-2025-11254Network attack vector

Code execution via unneutralized CSV formulas

Published Oct 11, 2025 · Updated Apr 8, 2026

CSV injection in Contest Gallery 27.0.3 and earlier allows remote attackers to plant spreadsheet formulas through gallery submissions. The gallery-submission export path writes attacker-controlled field values into CSV cells without neutralizing formula-leading characters. No authentication is required to submit the input, but code execution occurs only when a recipient downloads and opens the exported file in a spreadsheet configuration that evaluates the formula.

CVSS severity4.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSV injection in Contest Gallery 27.0.3 and earlier allows remote attackers to plant spreadsheet formulas through gallery submissions. The gallery-submission export path writes attacker-controlled field values into CSV cells without neutralizing formula-leading characters. No authentication is required to submit the input, but code execution occurs only when a recipient downloads and opens the exported file in a spreadsheet configuration that evaluates the formula.

The record

CVE
CVE-2025-11254
Published
Oct 11, 2025
Updated
Apr 8, 2026
Vendor
Contest Gallery
Product
Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2025CVE 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 <=27.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Contest Gallery · Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripeversion=0 <=27.0.3

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-1236Improper Neutralization of Formula Elements in a CSV File
T1204.002Malicious File

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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