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CVE-2026-27833

Piwigo broken access control

7.5 HIGHPublic exploitEPSS 1.70%
  1. Published3 Apr 2026

Description

Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, the pwg.history.search API method in Piwigo is registered without the admin_only option, allowing unauthenticated users to access the full browsing history of all gallery visitors. This issue has been patched in version 16.3.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Piwigo< 16.3.0

Remediation

Fixed in
Piwigo≥ 16.3.0

References

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Frequently asked

Is CVE-2026-27833 being actively exploited?

CVE-2026-27833 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.70%.

How severe is CVE-2026-27833?

CVE-2026-27833 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 1.70% probability of exploitation.

Which products are affected by CVE-2026-27833?

Affected products include Piwigo.

How do I fix CVE-2026-27833?

Upgrade affected software to a fixed version, for example Piwigo 16.3.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-27833 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.