A vulnerability has been found in Piwigo 16.3.0. (CVE-2026-78187)
A cross-site scripting (XSS) vulnerability exists in Piwigo version 16.3.0 affecting the Public Authentication Page component via manipulation of the 'lang' argument. The vulnerability requires high attack complexity and user interaction, with no privileges needed. Exploit code has been publicly disclosed. Upgrading to version 16.4.0 resolves the issue.
AI Analysis
Technical Summary
Piwigo 16.3.0 contains a cross-site scripting vulnerability (CWE-79) in the Public Authentication Page component. The flaw arises from improper handling of the 'lang' argument, allowing an attacker to inject malicious scripts. The attack vector is remote network access, but requires user interaction and is of high complexity. The vulnerability does not impact confidentiality or availability but can cause low integrity impact. A patch identified by commit 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e is available in version 16.4.0.
Potential Impact
The vulnerability allows an attacker to perform cross-site scripting attacks, potentially leading to low integrity impact such as executing malicious scripts in the context of the affected site. There is no impact on confidentiality or availability. The attack requires user interaction and is difficult to exploit due to high complexity.
Mitigation Recommendations
Upgrade Piwigo to version 16.4.0, which contains the official fix for this vulnerability. No other mitigations are specified or required.
A vulnerability has been found in Piwigo 16.3.0. (CVE-2026-78187)
Description
A cross-site scripting (XSS) vulnerability exists in Piwigo version 16.3.0 affecting the Public Authentication Page component via manipulation of the 'lang' argument. The vulnerability requires high attack complexity and user interaction, with no privileges needed. Exploit code has been publicly disclosed. Upgrading to version 16.4.0 resolves the issue.
CVSS v3.1
Score 3.1low
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Piwigo 16.3.0 contains a cross-site scripting vulnerability (CWE-79) in the Public Authentication Page component. The flaw arises from improper handling of the 'lang' argument, allowing an attacker to inject malicious scripts. The attack vector is remote network access, but requires user interaction and is of high complexity. The vulnerability does not impact confidentiality or availability but can cause low integrity impact. A patch identified by commit 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e is available in version 16.4.0.
Potential Impact
The vulnerability allows an attacker to perform cross-site scripting attacks, potentially leading to low integrity impact such as executing malicious scripts in the context of the affected site. There is no impact on confidentiality or availability. The attack requires user interaction and is difficult to exploit due to high complexity.
Mitigation Recommendations
Upgrade Piwigo to version 16.4.0, which contains the official fix for this vulnerability. No other mitigations are specified or required.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-p4vh-hfqq-9prq
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-78187"]
- Ecosystems
- []
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6a8c4c61acd9273b499bf79d
Added to database: 08/24/2026, 13:51:29 UTC
Last enriched: 08/24/2026, 14:22:20 UTC
Last updated: 08/25/2026, 02:51:59 UTC
Views: 5
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