CVE-2026-54514Network attack vector

DNS SSRF via eager InetSocketAddress resolution

Published Jun 23, 2026 · Updated Jun 23, 2026

SSRF in FasterXML jackson-databind allows remote attackers to trigger DNS queries from an application that deserializes their JSON. JDKFromStringDeserializer creates InetSocketAddress with a resolving constructor during readValue, so an attacker-chosen hostname reaches DNS before validation or connect logic. Reachability requires an application to bind untrusted JSON into a type containing an InetSocketAddress field; the bounded effect is an outbound DNS lookup and resolver probing.

CVSS severity5.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in FasterXML jackson-databind allows remote attackers to trigger DNS queries from an application that deserializes their JSON. JDKFromStringDeserializer creates InetSocketAddress with a resolving constructor during readValue, so an attacker-chosen hostname reaches DNS before validation or connect logic. Reachability requires an application to bind untrusted JSON into a type containing an InetSocketAddress field; the bounded effect is an outbound DNS lookup and resolver probing.

The record

CVE
CVE-2026-54514
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
FasterXML
Product
jackson-databind
Classifications
CWE-918
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 2.0.0, < 2.18.8
  2. Affected versionversion=>= 2.19.0, < 2.21.4
  3. Affected versionversion=>= 3.0.0, < 3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FasterXML · jackson-databindversion=>= 2.0.0, < 2.18.8; version=>= 2.19.0, < 2.21.4; version=>= 3.0.0, < 3.1.4

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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