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No exploitation reportedFix available

CVE-2018-18854

No exploitation reported by the sources we read.

  • Published2018-10-31
  • WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Lightbend Spray spray-json through 1.3.4 allows remote attackers to cause a denial of service (resource consumption) because of Algorithmic Complexity during the parsing of many JSON object fields (with keys that have the same hash code).

Timeline

dates in UTC
  1. 2018-10-3105:29CVE publishedNVD

Versions per branch

NVD · OSV
Lightbend spray-json
BranchAffectedFixed in
1.3≤ 1.3.4no fix published
spray-json_2.10
BranchAffectedFixed in
1.3< 1.3.51.3.5
spray-json_2.11
BranchAffectedFixed in
1.3< 1.3.51.3.5

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2018-10-31
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-q8xj-8xg3-w432

Frequently asked questions

What is CVE-2018-18854?

Lightbend Spray spray-json through 1.3.4 allows remote attackers to cause a denial of service (resource consumption) because of Algorithmic Complexity during the parsing of many JSON object fields (with keys that have the same hash code).

Is CVE-2018-18854 actively exploited?

Active exploitation of CVE-2018-18854 has not been confirmed. Its EPSS score was 1.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-18854?

CVE-2018-18854 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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