CVE-2026-13666 Other in DiskStation Manager (DSM)
Remote authenticated users can write limited files via CRLF injection in the Sharing API when a victim clicks a sharing URL.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-13666?
CVE-2026-13666 is a low-severity vulnerability in Synology DiskStation Manager (DSM), published on 18 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An improper neutralization of CRLF sequences ('CRLF Injection') vulnerability in Sharing API in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote authenticated users to write limited files when a victim clicks a sharing URL.
Weakness: CWE-93
Which versions are affected by CVE-2026-13666?
How do I fix CVE-2026-13666?
No fix has been published for CVE-2026-13666 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-13666 being exploited?
There is no known exploitation of CVE-2026-13666 in the wild and no public exploit code.
Sources
Also known as GHSA-7969-99rg-6xxh.