Answer in brief
CVE-2026-77310 records a Medium severity (CVSS 5.3) vulnerability in jackson-databind: Eager DNS resolution (SSRF) still present in InetAddress deserialization (Incomplete fix for CVE-2026-54514). The current sources do not mark it as known exploited. The current feed maps FasterXML/com.fasterxml.jackson.core:jackson-databind (generic), FasterXML/tools.jackson.core:jackson-databind (generic), 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 FasterXML/com.fasterxml.jackson.core:jackson-databind (generic), FasterXML/tools.jackson.core:jackson-databind (generic), 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.
| Package | Affected range | Fixed version |
|---|---|---|
| FasterXML/com.fasterxml.jackson.core:jackson-databindgeneric | >=2.0.0 <2.18.9 || >=2.19.0 <2.21.5 || >=2.22.0 <2.22.1 | 2.18.9, 2.21.5, 2.22.1 |
| FasterXML/tools.jackson.core:jackson-databindgeneric | >=3.0.0 <3.1.5 || >=3.2.0 <3.2.1 | 3.1.5, 3.2.1 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.0.0 <2.18.9 | 2.18.9 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.19.0 <2.21.5 | 2.21.5 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.22.0 <2.22.1 | 2.22.1 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.0.0,<2.18.9 | 2.18.9 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.19.0,<2.21.5 | 2.21.5 |
| com.fasterxml.jackson.core:jackson-databindmaven | >=2.22.0,<2.22.1 | 2.22.1 |
| tools.jackson.core:jackson-databindmaven | >=3.0.0,<3.1.5 | 3.1.5 |
| tools.jackson.core:jackson-databindmaven | >=3.2.0,<3.2.1 | 3.2.1 |
| tools.jackson.core:jackson-databindmaven | >=3.0.0 <3.1.5 | 3.1.5 |
| tools.jackson.core:jackson-databindmaven | >=3.2.0 <3.2.1 | 3.2.1 |
Published upstream
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.