CVE-2026-49833 DSpace: Path Traversal possible in LDN message generation

What is CVE-2026-49833?

CVE-2026-49833 is a medium-severity path traversal vulnerability in DSpace, published on 2 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

DSpace open source software is a repository application which provides durable access to digital resources. From versions 8.0-rc1 to before 8.4, 9.0-rc1 to before 9.3, and 10-rc1 to before 10.0, a path traversal vulnerability is possible via the COAR Notify / LDN service in DSpace. The attacker MUST already have DSpace administrator credentials in order to perform the attack. When reading a file input stream of an "inbound pattern" / "template", used to generate an LDN message, the LDN class does not check for path traversal or restrict the templates to a known base path. This could allow an untrusted file from elsewhere in the file system (e.g. an export log, a bitstream path, a temporary file) to be read and interpreted as an Apache Velocity template. This issue has been patched in versions 8.4, 9.3, and 10.0.

Weakness: CWE-22

Which versions are affected by CVE-2026-49833?

6 open source packages ship an affected version, including org.dspace:dspace-api.

How do I fix CVE-2026-49833?

Upgrade org.dspace:dspace-api to a fixed version for your release line: 10.0, 8.4 or 9.3.

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

Is CVE-2026-49833 being exploited?

There is no known exploitation of CVE-2026-49833 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9qm4-rh6w-pq5x.