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CVE-2018-16844
nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This…
Medium5.3EPSS 12.7%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 12.7% · top 3.7% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
References (11)
- DSA-4335 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16844 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2018:3680 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:3681 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 105868 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html (opens in a new tab)x_refsource_MISCx_transferred
- 1042038 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- USN-3812-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2019:2120 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://support.apple.com/kb/HT212818 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20210921 APPLE-SA-2021-09-20-4 Xcode 13 (opens in a new tab)mailing-listx_refsource_FULLDISCx_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)
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[](https://trackcve.app/cve/CVE-2018-16844)Record last updated .