CVE-2026-34229 Emlog: Stored XSS in Comment Module via URI Scheme Validation Bypass

Medium 6.1 Published 3 Apr 2026 Updated 6 Apr 2026

Attackers can inject malicious scripts into comments via URI scheme bypass, potentially stealing user sessions or executing code in Emlog CMS.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-34229?

CVE-2026-34229 is a medium-severity cross-site scripting vulnerability in Emlog Emlog, published on 3 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Emlog is an open source website building system. Prior to version 2.6.8, there is a stored cross-site scripting (XSS) vulnerability in emlog comment module via URI scheme validation bypass. This issue has been patched in version 2.6.8.

Weakness: CWE-79

Which versions are affected by CVE-2026-34229?

It affects 1 product.

Products include Emlog Emlog.

How do I fix CVE-2026-34229?

No fix has been published for CVE-2026-34229 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-34229 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34229 exists.

All Emlog Emlog vulnerabilities

Sources

Also known as GHSA-74gp-xh6w-hqw6.