# CVE-2026-77310: jackson-databind: jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor

CVE-2026-77310 is fixed in jackson-databind on 1 platform by ALAS2023-2026-2081 (version 2.21.5-2.amzn2023.0.1), released August 31, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-77310
- Priority: Routine
- CVSS: n/a (moderate)
- EPSS: 0.0031
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 31, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jackson-databind amzn 2023 | 2.21.5-2.amzn2023.0.1 | [ALAS2023-2026-2081](https://patchblox.com/security/data/fix/linux/alas2023-2026-2081.md) | Aug 31, 2026 |

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Data as of 2026-11-11T19:49:26Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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