CVE-2026-78187Piwigo Public Authentication cross site scripting
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-79, CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Aug 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n/a Piwigo piwigo:piwigo | 16.3.0; 16.4.0 not affected | CNA record |
References
- https://vuldb.com/vuln/394569vdb-entry, technical-description
- https://vuldb.com/vuln/394569/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-78187third-party-advisory
- https://vuldb.com/submit/885228third-party-advisory
- https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594related
- https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.mdexploit
- https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9epatch
- https://github.com/Piwigo/Piwigo/releases/tag/16.4.0patch
- https://github.com/Piwigo/Piwigo/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.