Vulnerability · Published Aug 24, 2026 · Assigned by GitHub_M
CVE-2026-77310jackson-databind: Eager DNS resolution (SSRF) still present in InetAddress deserialization (Incomplete fix for CVE-2026-54514)
Medium 5.3
In plain English
A medium-severity server-side request forgery in com.fasterxml.jackson.core:jackson-databind from FasterXML. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.18.9 | GHSA-vvgp-rfg2-7rr6 |
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.22.1 | GHSA-vvgp-rfg2-7rr6 |
| Maven | com.fasterxml.jackson.core:jackson-databind | 2.21.5 | GHSA-vvgp-rfg2-7rr6 |
| Maven | tools.jackson.core:jackson-databind | 3.2.1 | GHSA-vvgp-rfg2-7rr6 |
| Maven | tools.jackson.core:jackson-databind | 3.1.5 | GHSA-vvgp-rfg2-7rr6 |
| Ubuntu:22.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-77310 |
| Ubuntu:24.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-77310 |
| Ubuntu:26.04:LTS | jackson-databind | no fix listed | UBUNTU-CVE-2026-77310 |
| Ubuntu:26.10 | jackson-databind | no fix listed | UBUNTU-CVE-2026-77310 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FasterXML | com.fasterxml.jackson.core:jackson-databind | >= 2.0.0, < 2.18.9>= 2.19.0, < 2.21.5>= 2.22.0, < 2.22.1 |
| FasterXML | tools.jackson.core:jackson-databind | >= 3.0.0, < 3.1.5>= 3.2.0, < 3.2.1 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N