CVE-2026-78187

A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 16.4.0 will fix this issue. The name of the patch is 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e. It is recommended to upgrade the affected component.

CVSS v3 3.1 LOW
CVSS v2.0 2.6 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

2.6^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:H/Au:N/C:N/I:P/A:N

Exploitability : 4.9 / Impact : 2.9

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md
https://github.com/Piwigo/Piwigo/
https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e
https://github.com/Piwigo/Piwigo/releases/tag/16.4.0
https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594
https://vuldb.com/cve/CVE-2026-78187
https://vuldb.com/submit/885228
https://vuldb.com/vuln/394569
https://vuldb.com/vuln/394569/cti

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-24 05:16

Updated : 2026-08-24 17:18

NVD link : CVE-2026-78187

Mitre link : CVE-2026-78187

CVE.ORG link : CVE-2026-78187

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-94

Improper Control of Generation of Code ('Code Injection')

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