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CVE-2019-16201
WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of…
- 7.5HighCVSS base score
- 5.1%Exploitation in 30 daysEPSS · top 7.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network.
Timeline
ID reserved
By mitre
- 3 months later
· 3 months later
Published
- 5 years later
· 5 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 | 3.1 | 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)
- 5.1% · top 7.6% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
11
- https://hackerone.com/reports/661722 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html (opens in a new tab)x_transferred
- [debian-lts-announce] 20191210 [SECURITY] [DLA 2027-1] jruby security update (opens in a new tab)mailing-listx_transferred
- 20191217 [SECURITY] [DSA 4587-1] ruby2.3 security update (opens in a new tab)mailing-listx_transferred
- 20191217 [SECURITY] [DSA 4586-1] ruby2.5 security update (opens in a new tab)mailing-listx_transferred
- DSA-4587 (opens in a new tab)vendor-advisoryx_transferred
- https://www.oracle.com/security-alerts/cpujan2020.html (opens in a new tab)x_transferred
- GLSA-202003-06 (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2020:0395 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20200816 [SECURITY] [DLA 2330-1] jruby security update (opens in a new tab)mailing-listx_transferred
- [debian-lts-announce] 20230430 [SECURITY] [DLA 3408-1] jruby security update (opens in a new tab)mailing-listx_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)
- EUVD EUVD-2019-7013 (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-2019-16201)Record last updated .