Piwigo 16.3.0 Public Authentication Page lang cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.8$0-$5k1.01+

Summaryinfo

A vulnerability was found in Piwigo 16.3.0. It has been rated as problematic. Affected is an unknown function of the component Public Authentication Page. Performing a manipulation of the argument lang results in cross site scripting. This vulnerability is cataloged as CVE-2026-78187. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Piwigo 16.3.0. This affects an unknown function of the component Public Authentication Page. The manipulation of the argument lang with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-78187. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Upgrading to version 16.4.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 2.8

VulDB Base Score: 3.1
VulDB Temp Score: 2.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Piwigo 16.4.0
Patch: 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e

Timelineinfo

08/23/2026 Advisory disclosed
08/23/2026 +0 days VulDB entry created
08/23/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-rr39-mf4j-6594
Status: Confirmed

CVE: CVE-2026-78187 (🔒)
GCVE (CVE): GCVE-0-2026-78187
GCVE (VulDB): GCVE-100-394569
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/23/2026 19:02
Changes: 08/23/2026 19:02 (62)
Complete: 🔍
Submitter: Leousum
Cache ID: 216::103

Submitinfo

Accepted

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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