CVE-2018-16396
No exploitation reported by the sources we read.
- Published2018-11-16
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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
An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
Timeline
dates in UTC- 2018-11-1618:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-16396?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-16396?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 6.0 | = 6.0 | no fix published | NVD |
| 7.0 | = 7.0 | no fix published | NVD |
| 7.4 | = 7.4 | no fix published | NVD |
| 7.5 | = 7.5 | no fix published | NVD |
| 7.6 | = 7.6 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 14.4 | = 14.04 | no fix published | NVD |
| 16.4 | = 16.04 | no fix published | NVD |
| 18.4 | = 18.04 | no fix published | NVD |
| 18.10 | = 18.10 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.3 | ≥ 2.3.0, ≤ 2.3.7 | no fix published | NVD |
| 2.4 | ≥ 2.4.0, ≤ 2.4.4 | no fix published | NVD |
| 2.5 | ≥ 2.5.0, ≤ 2.5.1 | no fix published | NVD |
| 2.6 | = 2.6.0 | no fix published | NVD |
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
Advisories and patches
- www.ruby-lang.orgVendor Advisory
- www.ruby-lang.orgRelease Notes
- www.ruby-lang.orgRelease Notes
- www.ruby-lang.orgRelease Notes
- www.ruby-lang.orgRelease Notes
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.08.1read 2026-10-23
- NVDCVSS 2.06.8read 2026-10-23
- FIRST EPSSEPSS score8.0 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2018-11-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-16396?
Is CVE-2018-16396 actively exploited?
What is the CVSS score for CVE-2018-16396?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.