Answer in brief
CVE-2026-54514 records a Medium severity (CVSS 5.3) vulnerability in jackson-databind: InetSocketAddress deserialization triggers eager DNS resolution (SSRF). The current sources do not mark it as known exploited. The current feed maps com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven), com.fasterxml.jackson.core:jackson-databind (maven) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.0.0,<2.18.8 | 2.18.8 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.19.0,<2.21.4 | 2.21.4 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=3.0.0,<3.1.4 | 3.1.4 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.0.0 <2.18.8 | 2.18.8 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.19.0 <2.21.4 | 2.21.4 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=3.0.0 <3.1.4 | 3.1.4 |
| tools.jackson.core:jackson-databindmaven | >=2.19.0,<2.21.4 | 2.21.4 |
| tools.jackson.core:jackson-databindmaven | >=3.0.0,<3.1.4 | 3.1.4 |
| tools.jackson.core:jackson-databindmaven | >=2.19.0 <2.21.4 | 2.21.4 |
| tools.jackson.core:jackson-databindmaven | >=3.0.0 <3.1.4 | 3.1.4 |
Published upstream
Jun 23, 2026
Evidence: source:ghsa:source_dates:source-dates:recordSource modified
Nov 10, 2026
Evidence: source:ghsa:source_dates:source-dates:recordFirst seen by HOL
Jun 23, 2026
## Summary `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. ## Impact An attacker controlling JSON deserialized into an `InetSocketAddress`-bearing type can force outbound DNS lookups for attacker-chosen hostnames at deserialization time (SSRF / DNS-based out-of-band interaction / internal-resolver probing), purely from binding. ## Affected / Patched (verified via `git tag --contains` on `1f5a103`) - 2.18 line: `>= 2.18.0, < 2.18.8` -> fixed in **2.18.8** - 2.19-2.21 line: `>= 2.19.0, < 2.21.4` -> fixed in **2.21.4** - 3.x line: `>= 3.0.0, < 3.1.4` -> fixed in **3.1.4** ## Severity / CWE Maintainer: minor. Reporter: LOW. CWE-918 (SSRF). ## Upstream fix FasterXML/jackson-databind#5951 ("Improve InetSocketAddress deserialization"). Released 2026-06-04 in 2.18.8 / 2.21.4 / 3.1.4. ## Credits Omkhar Arasaratnam (@omkhar) - finder.
Quoted source text, attributed separately from HOL analysis.