SSRF in Fasterxml Jackson-Databind
CVE-2026-54514
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.0.0 until 2.18.8, 2.21.4, and 3.1.4, JDKFromStringDeserializer constructed InetSocketAddress with new InetSocketAddress(host, port), which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an InetSocketAddress field issues an attacker-chosen DNS query during readValue, before any application-level validation or connect logic. The fix uses InetSocketAddress.createUnresolved(host, port), deferring DNS to an explicit connect. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.004 (30.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Fasterxml Jackson-databind — versions >= 2.0.0, < 2.18.8, >= 2.19.0, < 2.21.4, >= 3.0.0, < 3.1.4
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-54514?
- CVE-2026-54514 is a medium-severity vulnerability in Fasterxml Jackson-Databind, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-06-23.
- How severe is CVE-2026-54514?
- Medium severity. CVSS v3 base score is 5.3 out of 10.