CVE-2026-78187
A vulnerability has been found in Piwigo 16.3.0.
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
Description
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 4.0
- 1.3 LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79, CWE-94
- Source
- cna@vuldb.com
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.