CVE-2026-95155 Denial of service in n/a
Attackers can cause denial of service by sending deeply nested JSON to applications using Jackson 1.x for deserialization.
- 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-2026-95155?
CVE-2026-95155 is a high-severity denial of service vulnerability in n/a, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FasterXML Jackson 1.x, confirmed in jackson-mapper-asl versions 1.8.3, 1.9.2, 1.9.11, 1.9.12, and 1.9.13, allows attackers to cause a denial of service by supplying deeply nested JSON input to an application that deserializes untrusted JSON using ObjectMapper.readValue.
Weakness: CWE-674
Which versions are affected by CVE-2026-95155?
How do I fix CVE-2026-95155?
No fix has been published for CVE-2026-95155 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-2026-95155 being exploited?
There is no known exploitation of CVE-2026-95155 in the wild and no public exploit code.
Sources
Also known as GHSA-g67j-pphj-gj4x, UBUNTU-CVE-2026-95155.