CVE-2026-102778: Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gall

Q: How do I fix CVE-2026-102778?

event gallery: upgrade to 6.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-102778 being exploited?

CVE-2026-102778 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-2026-102778 affect?

CVE-2026-102778 affects event gallery. Severity is medium (CVSS 6.1). Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link the article the image w

Q: How urgent is CVE-2026-102778?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2026-102778 is a medium-severity flaw (CVSS 6.1) affecting event gallery. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link the article the image was shared from when the option "Share article links" is on. It took the address of the article from the shared link and printed it into the page without checking or escaping it; with the link type "Image Page w

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 100%)
CISA exploited list	No
Weakness	CWE-352, CWE-601
Published	2026-10-05
Last modified	2026-10-14

Publisher (CNA): Joomla! Project · Vendor: svenbluege

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-05 16:17 UTCPublished CVE record published
2026-10-14 18:48 UTCUpdated Record last modified

svenbluege event gallery UPGRADE

Affected: < 6.6.0

Fixed in: 6.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy event-gallery || rpm -q event-gallery || event-gallery --version

2. UPGRADE to 6.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade event-gallery

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade event-gallery

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-2026-102778?

event gallery: upgrade to 6.6.0. Exact commands for each OS are on this page.

Is CVE-2026-102778 being exploited?

CVE-2026-102778 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-2026-102778 affect?

CVE-2026-102778 affects event gallery. Severity is medium (CVSS 6.1). Joomla Extension - svenbluege.de - Cross-site scripting and open redirect on the share mini page in Event Gallery extension < 6.6.0 - The page a shared image link opens (the share mini page of the front end) can link the article the image w

How urgent is CVE-2026-102778?

Priority 21/100. No elevated risk signals yet.

Software pages

Joomla vulnerabilities

Related CVEs

CVE-2026-102776 MEDIUM 4.3 UPGRADE Joomla Extension - svenbluege.de - Cross-site request forgery of list tasks of the backend in Event Gallery ex
CVE-2026-102777 MEDIUM 6.5 UPGRADE Joomla Extension - svenbluege.de - Server-side request forgery in the Google Photos picker in Event Gallery ex

References

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