EUVD-2026-68523
GHSA-hvrr-jrcj-qqp5
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable redirect flaw requiring victim interaction (UI:R); no server confidentiality or availability impact; low integrity impact from misdirected users.
Primary rating from Vendor (Joomla).
CVSS VectorVendor: Joomla
Lifecycle Timeline
1DescriptionCVE.org
Joomla Extension - joomshaper.com - Open Redirect via Base64 Return Parameter in Helix Ultimate < 2.2.10 - Return redirect parameters accepted arbitrary Base64 strings without verifying whether the resolved target was an internal site URL via Uri::isInternal.
AnalysisAI
Open redirect in Helix Ultimate (Joomla extension by joomshaper.com) versions prior to 2.2.10 allows unauthenticated network-accessible attackers to craft redirect URLs that bypass the site's origin validation. The return parameter accepts arbitrary Base64-encoded strings without invoking Joomla's Uri::isInternal() check, meaning the decoded destination is never validated as belonging to the host site. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Helix Ultimate extension must be installed and active on the target Joomla site running a version prior to 2.2.10. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 5.3 (medium) reflects the network-accessible attack vector, low complexity, no required privileges, and mandatory user interaction (UI:P), with low CIA impacts across the vulnerable system. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Helix Ultimate to version 2.2.10 or later, which resolves the open redirect by enforcing Joomla's Uri::isInternal() validation on decoded Base64 return parameters. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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