CVE-2018-18853
Uncontrolled Resource Consumption in spray-json when parsing decimal digit fields
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 a field composed of many decimal digits.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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 a field composed of many decimal digits.
- Record
CVE-2018-18853- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-400
- Updated
- 2026-11-02
CVE List No score
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 a field composed of many decimal digits.
- Record
CVE-2018-18853- Updated
- 2026-11-02
EUVDEUVD-2018-0748 No score
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 a field composed of many decimal digits.
- Record
EUVD-2018-0748- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f94m-mqhr-mc29
Uncontrolled Resource Consumption in spray-json when parsing decimal digit fields
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 a field composed of many decimal digits.
- Record
GHSA-f94m-mqhr-mc29- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
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 a field composed of many decimal digits.
- Record
CVE-2018-18853- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-f94m-mqhr-mc29
Uncontrolled Resource Consumption in spray-json when parsing decimal digit fields
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 a field composed of many decimal digits.
- Record
GHSA-f94m-mqhr-mc29- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
io.spray:spray-json_2.12Maven |
before 1.3.5 | 1.3.5 |
io.spray:spray-json_2.11Maven |
before 1.3.5 | 1.3.5 |
io.spray:spray-json_2.10Maven |
before 1.3.5 | 1.3.5 |
io.spray:spray-json_2.12Maven |
before 1.3.5, plus listed versions 1.3.21.3.31.3.4 |
1.3.5 |
io.spray:spray-json_2.11Maven |
before 1.3.5, plus listed versions 1.2.61.3.01.3.11.3.21.3.31.3.4 |
1.3.5 |
io.spray:spray-json_2.10Maven |
before 1.3.5, plus listed versions 1.2.51.2.61.3.01.3.11.3.21.3.31.3.4 |
1.3.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-18853 is a high vulnerability (CVSS 7.5) in Lightbend Spray-json, published October 31, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.90%, the 79th percentile. Fixed in io.spray:spray-json_2.12 1.3.5.