SSRF in Fasterxml Com.fasterxml.jackson.core:jackson-Databind
CVE-2026-77310
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. Prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 on their respective release lines, the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls InetAddress.getByName() on attacker-controlled input, causing eager DNS resolution during deserialization and enabling DNS-based server-side request forgery and internal-host enumeration. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Fasterxml Com.fasterxml.jackson.core:jackson-Databind — versions >= 2.0.0, < 2.18.9, >= 2.19.0, < 2.21.5, >= 2.22.0, < 2.22.1
- Fasterxml Tools.jackson.core:jackson-Databind — versions >= 3.0.0, < 3.1.5, >= 3.2.0, < 3.2.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-77310?
- CVE-2026-77310 is a medium-severity vulnerability in Fasterxml Com.fasterxml.jackson.core:jackson-Databind, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-08-24.
- How severe is CVE-2026-77310?
- Medium severity. CVSS v3 base score is 5.3 out of 10.