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PatchSiren cyber security CVE debrief

CVE-2026-102786 phoca.cz CVE debrief

A Joomla Extension, Phoca Gallery, is vulnerable to authenticated stored cross-site scripting through HTML attribute injection. This issue affects Phoca Gallery versions 4.5.0 through 6.1.5. The vulnerability allows attackers to inject malicious scripts, potentially leading to unauthorized code execution or data theft. Defenders should assess exposure and prioritize patching or mitigation to prevent exploitation. It's essential to verify exposure and apply patches or mitigations to prevent exploitation.

Vendor
phoca.cz
Product
Phoca Gallery extension for Joomla
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-23
Original CVE updated
2026-11-02
Advisory published
2026-10-23
Advisory updated
2026-11-02

Who should care

Defenders responsible for Joomla installations with the Phoca Gallery extension should assess exposure and prioritize patching or mitigation.

Why it matters

CVE-2026-102786 is a high-severity vulnerability in the Phoca Gallery Joomla Extension that allows authenticated stored cross-site scripting through HTML attribute injection. Defenders should prioritize verifying exposure and applying patches or mitigations to prevent exploitation.

  • Potential for attackers to inject malicious scripts
  • Risk of unauthorized code execution or data theft
  • Need for defenders to verify exposure and apply patches
  • Importance of monitoring for suspicious activity

Technical summary

The Phoca Gallery Joomla Extension is vulnerable to authenticated stored cross-site scripting through HTML attribute injection in versions 4.5.0 - 6.1.5. This vulnerability allows attackers to inject malicious scripts, potentially leading to unauthorized code execution or data theft. Defenders should prioritize verifying exposure and applying patches or mitigations to prevent exploitation.

Defensive priority

Defenders should prioritize verifying exposure and applying patches or mitigations to prevent exploitation.

Recommended defensive actions

  • Verify exposure by checking installed Phoca Gallery versions
  • Apply patches or updates to Phoca Gallery
  • Implement input validation and output encoding to prevent XSS
  • Monitor for suspicious activity

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected versions. The vulnerability is confirmed in Phoca Gallery versions 4.5.0 through 6.1.5. Defenders should verify exposure by checking installed Phoca Gallery versions and apply patches or updates to prevent exploitation. The CVE record was published on 2026-10-23T15:17:22.807Z and has not been modified since then.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-102786 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-102786

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-102786 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-102786

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.