SEPTEMBER 18, 2026
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Case File

CVE-2026-77310

MEDIUM · CVSS 5.3 EPSS 0.19% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-24 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The vulnerability affects the Jackson databind library in Java, specifically in the deserialization process where it improperly handles attacker-controlled input, leading to eager DNS resolution. This can result in server-side request forgery (SSRF) and internal host enumeration, potentially exposing sensitive internal network information. Organizations using affected versions should prioritize updating to the patched releases to mitigate these security risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-77310
Severity
MEDIUM
CVSS
5.3
EPSS
0.19%
Java

Original NVD 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.