ZDF
Sign inSign up

Vulnerabilities

Security fix · CVE-2026-54514

InetSocketAddress deserialization triggers eager DNS resolution (SSRF) in jackson-databind

Published Jun 16, 2026 · catalog updated Jun 18, 2026 · InetSocketAddress deserialization triggers eager

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-54514. EPSS is 0.37%. Act only if a listed version of InetSocketAddress deserialization triggers eager is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (InetSocketAddress deserialization triggers eager).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.37%
Remediation
Version ranges on file
Affected products
maven com.fasterxml.jackson.core:jackson-databind · maven tools.jackson.core:jackson-databind

## Summary constructed with , which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an field issues an attacker-chosen DNS query during , before any application-level validation or connect logic. The fix uses , deferring DNS to an explicit connect. ## Impact An attacker controlling JSON deserialized into an -bearing type can force outbound DNS lookups for attacker-chosen hostnames at deserialization time (SSRF / DNS-based out-of-band interaction / internal-resolver probing), purely from binding. ## Affected / Patched (verified via on ) - 2.18 line: -> fixed in **2.18.8** - 2.19-2.21 line: -> fixed in **2.21.4** - 3.x line: -> fixed in **3.1.4** ## Severity / CWE Maintainer: minor. Reporter: LOW. CWE-918 (SSRF). ## Upstream fix FasterXML/jackson-databind#5951 ("Improve InetSocketAddress deserialization"). Released 2026-06-04 in 2.18.8 / 2.21.4 / 3.1.4. ## Credits Omkhar Arasaratnam (@omkhar) - finder.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • maven com.fasterxml.jackson.core:jackson-databind>= 2.0.0, < 2.18.8
  • maven com.fasterxml.jackson.core:jackson-databind>= 2.19.0, < 2.21.4
  • maven tools.jackson.core:jackson-databind>= 3.0.0, < 3.1.4

How to fix CVE-2026-54514

  • Upgrade

    CVE-2026-54514 lists a fix boundary at 2.18.8. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 2.18.8

  • Advisory

    Open the inventory_github record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-54514. EPSS is 0.37%. Act only if a listed version of InetSocketAddress deserialization triggers eager is installed.

Which versions are affected?

Compare what you have installed with >= 2.0.0, < 2.18.8, >= 2.19.0, < 2.21.4, >= 3.0.0, < 3.1.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-918: Server-Side Request Forgery (SSRF). EPSS 0.37%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Jackson security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 16, 2026 · Maintainer security tabs

    Detected

    ## Summary constructed with , which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an field issues an attacker-chosen DNS query during , before any application-level validation or connect logic. The fix uses , deferring DNS to an explicit connect. ## Impact An attacker controlling JSON deserialized int

  2. Jun 18, 2026 · Maintainer security tabs

    Updated

    ## Summary constructed with , which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an field issues an attacker-chosen DNS query during , before any application-level validation or connect logic. The fix uses , deferring DNS to an explicit connect. ## Impact An attacker controlling JSON deserialized int

Sources

  • Maintainer security tabsVendor advisoryGHSA-hgj6-7826-r7m5

    ## Summary constructed with , which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an field issues an attacker-chosen DNS query during , before any application-level validation or connect logic. The fix uses , deferring DNS to an explicit connect. ## Impact An attacker controlling JSON deserialized int

    github.com

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Maintainer security tabsNov 2, 2026