CVE-2026-18968 ttttonyhe OBlog tags.php cross site scripting
Remote attackers can execute arbitrary scripts via the day parameter in tags.php, potentially compromising user sessions.
- 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-2026-18968?
CVE-2026-18968 is a medium-severity cross-site scripting vulnerability in ttttonyhe OBlog, published on 5 Aug 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
A security vulnerability has been detected in ttttonyhe OBlog up to 3ca6a45a2fcc81f6086751d8af124658720e8f8f. This issue affects some unknown processing of the file /tags.php. Such manipulation of the argument day leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-18968?
How do I fix CVE-2026-18968?
No fix has been published for CVE-2026-18968 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-2026-18968 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18968 exists.
Sources
Also known as GHSA-h4fj-xv6r-wvv7.