CVE-2020-5182: The J-BusinessDirectory extension before 5.2.9 for Joomla! allows Reverse Tabnabbing

Q: How do I fix CVE-2020-5182?

j-businessdirectory: upgrade to 5.2.9. Exact commands for each OS are on this page.

Q: Is CVE-2020-5182 being exploited?

CVE-2020-5182 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-5182 affect?

CVE-2020-5182 affects j-businessdirectory. Severity is medium (CVSS 6.5). The J-BusinessDirectory extension before 5.2.9 for Joomla! allows Reverse Tabnabbing. In some configurations, the link to the business website can be entered by any user. If it doesn't contain rel="noopener" (or similar attributes such as n

Q: How urgent is CVE-2020-5182?

Priority 39/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2020-5182 is a medium-severity flaw (CVSS 6.5) affecting j-businessdirectory. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The J-BusinessDirectory extension before 5.2.9 for Joomla! allows Reverse Tabnabbing. In some configurations, the link to the business website can be entered by any user. If it doesn't contain rel="noopener" (or similar attributes such as noreferrer), the tabnabbing may occur. To reproduce the bug, create a business with a website link that contains JavaScript to exploit the window.opener property (for example, by setting window.opener.location).

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-269
Published	2020-02-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cmsjunkie

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-03 17:15 UTCPublished CVE record published
2026-06-17 03:20 UTCUpdated Record last modified

cmsjunkie j-businessdirectory UPGRADE

Affected: < 5.2.9

Fixed in: 5.2.9

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy j-businessdirectory || rpm -q j-businessdirectory || j-businessdirectory --version

2. UPGRADE to 5.2.9 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade j-businessdirectory

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade j-businessdirectory

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-5182?

j-businessdirectory: upgrade to 5.2.9. Exact commands for each OS are on this page.

Is CVE-2020-5182 being exploited?

CVE-2020-5182 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-5182 affect?

CVE-2020-5182 affects j-businessdirectory. Severity is medium (CVSS 6.5). The J-BusinessDirectory extension before 5.2.9 for Joomla! allows Reverse Tabnabbing. In some configurations, the link to the business website can be entered by any user. If it doesn't contain rel="noopener" (or similar attributes such as n

How urgent is CVE-2020-5182?

Priority 39/100. No elevated risk signals yet.

Software pages

Joomla vulnerabilities

References

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