CVE-2026-78079

5.3 MEDIUM 0.4% exploit odds No fix listed Other Web app

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-08-31 14:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-08-31 19:33 UTC Last updatedMost recent change to the record

Details

Published: 2026-08-31 14:17 UTC
Last modified: 2026-08-31 19:33 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-601
Record status: Deferred

Attack profile CVSS 4.0 · 5.3

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: Passive
Confidentiality: Low
Integrity: Low
Availability: Low

Raw vector

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

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References

https://www.joomshaper.com/joomla-templates/helixultimate

NVD record · CVE.org record