jackson-databind: Eager DNS resolution (SSRF) still present in InetAddress deserialization (Incomplete fix for CVE-2026-54514) (CVE-2026-77310) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-77310

jackson-databind: Eager DNS resolution (SSRF) still present in InetAddress deserialization (Incomplete fix for CVE-2026-54514)

Answer in brief

CVE-2026-77310 records a Unknown severity 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). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 24, 2026Updated Aug 24, 2026Source checked Aug 24, 2026First seen by HOL Aug 24, 2026Material review Aug 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. 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.

Affected scope and exposure questions

The current feed maps FasterXML/com.fasterxml.jackson.core:jackson-databind (generic), FasterXML/tools.jackson.core:jackson-databind (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
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	Not reported
FasterXML/tools.jackson.core:jackson-databindgeneric	>= 3.0.0, < 3.1.5 \|\| >= 3.2.0, < 3.2.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for FasterXML/com.fasterxml.jackson.core:jackson-databind, FasterXML/tools.jackson.core:jackson-databind.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 24, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source description

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.