CVE-2021-48017 OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal via bscw.cgi

Q: What is CVE-2021-48017?

CVE-2021-48017 is a high-severity vulnerability in OrbiTeam BSCW Server, published on 22 Oct 2026.

High 8.7 Published 22 Oct 2026 Updated 29 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2021-48017?

CVE-2021-48017 is a high-severity vulnerability in OrbiTeam BSCW Server, published on 22 Oct 2026.

Official description

OrbiTeam BSCW Server 5.x before 5.2.5 and 7.x before 7.4.4 contains an unauthenticated path traversal vulnerability in the style_name parameter of the theme operation. Attackers can send GET requests to /pub/bscw.cgi/<id>?op=theme with ../ sequences in style_name to read local files such as /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-22.

Weakness: CWE-22

Which versions are affected by CVE-2021-48017?

How do I fix CVE-2021-48017?

No fix has been published for CVE-2021-48017 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-48017 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-48017 exists.

Sources

Also known as GHSA-pvhv-hmm4-4xwh.