CVE-2026-107621 J4Care dcm4che Loop with Unreachable Exit Condition
Attackers can cause a denial of service in dcm4chee-arc-light by sending crafted or truncated JPEG streams that trigger an infinite loop.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-107621?
CVE-2026-107621 is a high-severity denial of service vulnerability in J4Care dcm4chee-arc-light, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
JPEGParser can enter an infinite loop while parsing a specially crafted or truncated stream.
Weakness: CWE-835
Which versions are affected by CVE-2026-107621?
How do I fix CVE-2026-107621?
No fix has been published for CVE-2026-107621 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-107621 being exploited?
There is no known exploitation of CVE-2026-107621 in the wild and no public exploit code.