CVE-2026-1812 bolo-blog bolo-solo Filename BackupService.java importFromCnblogs path traversal

Medium 5.3 Published 3 Feb 2026 Updated 23 Feb 2026

Remote attackers can exploit a path traversal vulnerability in the importFromCnblogs function to read or modify arbitrary files on the server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-1812?

CVE-2026-1812 is a medium-severity path traversal vulnerability in bolo-blog bolo-solo, published on 3 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability has been found in bolo-blog bolo-solo up to 2.6.4. This impacts the function importFromCnblogs of the file src/main/java/org/b3log/solo/bolo/prop/BackupService.java of the component Filename Handler. The manipulation of the argument File leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-22

Which versions are affected by CVE-2026-1812?

It affects 1 product.

Products include Adlered Bolo-Solo.

How do I fix CVE-2026-1812?

No fix has been published for CVE-2026-1812 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-1812 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1812 exists.

Sources

Also known as GHSA-7jwc-4rcq-547h.