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CVE-2026-65888 is an improper access control vulnerability in the Balbooa Gridbox extension for Joomla, affecting versions 1.0.0 through 2.20.1. The socialLogin functionality fails to enforce authorization over the account selected for authentication, enabling an unauthenticated remote attacker to authenticate as any registered user, including privileged users.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical improper-access-control vulnerability in the socialLogin functionality of Balbooa Gridbox for Joomla versions earlier than 2.20.2. It permits an unauthenticated attacker to authenticate as any registered user, resulting in account takeover.
An account takeover vulnerability in the Balbooa Gridbox extension for Joomla affecting versions before 2.20.2. The socialLogin method allows an attacker to log in as any user on the target site.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.