CVE-2026-35048Public exploitNetwork attack vector

Unauthenticated code execution via installer config injection

Published Jul 20, 2026 · Updated Jul 20, 2026

Code injection in Piwigo 16.3.0 and earlier allows remote attackers to execute arbitrary PHP through the network-exposed installer. On PHP 8+, install.php skips addslashes() after testing for the removed get_magic_quotes_gpc() function, then interpolates database POST fields into local/config/database.inc.php. Unauthenticated access to an uninitialized or otherwise reachable installer is sufficient to run commands with web-server privileges on subsequent page loads.

CVSS severity9.8
Critical
EPSS probability0.58%
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 Piwigo 16.3.0 and earlier allows remote attackers to execute arbitrary PHP through the network-exposed installer. On PHP 8+, install.php skips addslashes() after testing for the removed get_magic_quotes_gpc() function, then interpolates database POST fields into local/config/database.inc.php. Unauthenticated access to an uninitialized or otherwise reachable installer is sufficient to run commands with web-server privileges on subsequent page loads.

The record

CVE
CVE-2026-35048
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
Piwigo
Product
Piwigo
Classifications
CWE-20, CWE-94, T1059.004, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 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=<= 16.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Piwigo · Piwigoversion=<= 16.3.0

Published CVSS scores

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.004Unix Shell
T1190Exploit Public-Facing Application

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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