HOMEVULNERABILITIESCVE-2026-27833
HIGH

CVE-2026-27833

CWE-862Published: April 3, 2026· Updated: Apr 9, 2026

7.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:12.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-27833 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

piwigo1 product
piwigo
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1c
ADVISORYhttps://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2

All References (3)

→
https://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1cPatch
→
https://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2Exploit · Vendor Advisory
→
https://piwigo.org/release-16.3.0Release Notes

Quick Facts

CVE IDCVE-2026-27833
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-862
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedApr 3, 2026

Related CVEs (CWE-862)

CVE-2026-33712
10.0
CVE-2026-0092
10.0
CVE-2026-34976
10.0
CVE-2026-2031
10.0
CVE-2025-30416
10.0
CVE-2026-46425
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-27833 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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