CVE-2026-77028: Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo

Routine

MEDIUM 5.3

CVE-2026-77028 is a medium-severity flaw (CVSS 5.3) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Passive
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79, CWE-601
Published	2026-08-21
Last modified	2026-10-23

Publisher (CNA): Joomla! Project

Timeline

2026-08-21 13:18 UTCPublished CVE record published
2026-10-23 22:10 UTCUpdated Record last modified

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Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

References

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