CVE-2026-78187CWE-79CWE-94cross-site-scriptingcode-injection

CVE-2026-78187

Low · published August 24, 2026

CVSS v3.1
3.1
EPSS
1%
Percentile
50.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS v4.0
2.3 · CVSS: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
EPSS
0.00657 · 50.9th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-08-24T09:16Z
References (9)
https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md · [email protected]https://github.com/Piwigo/Piwigo/ · [email protected]https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e · [email protected]https://github.com/Piwigo/Piwigo/releases/tag/16.4.0 · [email protected]https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594 · [email protected]https://vuldb.com/cve/CVE-2026-78187 · [email protected]https://vuldb.com/submit/885228 · [email protected]https://vuldb.com/vuln/394569 · [email protected]https://vuldb.com/vuln/394569/cti · [email protected]
EPSS history
Timeline
  • 24 AUG 04:30Z
    Piwigo Public Authentication cross site scripting
    cvelistv5