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CVE-2018-16396
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…
High8.1EPSS 8.0%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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
ID reserved
By mitre
- 2 months later
· 2 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 8.0% · top 5.2% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (16)
- https://hackerone.com/reports/385070 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:3729 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:3730 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:3731 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4332 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3808-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://security.netapp.com/advisory/ntap-20190221-0002/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.ruby-lang.org/en/news/2018/10/17/not-propagated-taint-flag-in-some-formats-of-pack-cve-2018-16396/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- [debian-lts-announce] 20181028 [SECURITY] [DLA 1558-1] ruby2.1 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 1042106 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- openSUSE-SU-2019:1771 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2019:2028 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-16396)Record last updated .