Sinatra rack-protection versions 1.5.4 and 2.0.0.rc3 and earlier contains a timing attack vulnerability in the CSRF token checking that can result in signatures can be exposed. This attack appear to be exploitable via network connectivity to the ruby application. This vulnerability appears to have been fixed in 1.5.5 and 2.0.0.
CVE-2018-1000119
This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 39% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.9
- EG Score
- 5.9(medium)
- EPSS
- 82.7%
- KEV
- Not listed
Published
March 7, 2018
Last Modified
November 21, 2024
References (8)
- cve@mitrehttps://access.redhat.com/errata/RHSA-2018:1060
- cve@mitrehttps://github.com/sinatra/rack-protection/pull/98
- cve@mitrehttps://github.com/sinatra/sinatra/commit/8aa6c42ef724f93ae309fb7c5668e19ad547eceb#commitcomment-27964109
- cve@mitrehttps://www.debian.org/security/2018/dsa-4247
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:1060
- af854a3a-2127-422b-91ae-364da2661108https://github.com/sinatra/rack-protection/pull/98
- af854a3a-2127-422b-91ae-364da2661108https://github.com/sinatra/sinatra/commit/8aa6c42ef724f93ae309fb7c5668e19ad547eceb#commitcomment-27964109
- af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4247
Vendor Advisories for CVE-2018-1000119(3)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | tfm-rubygem-zeitwerk-0:2.2.2-1.el7sat | 2021-04-21 | redhat |
| redhat | pcs-0:0.9.162-5.el7_5.1 | 2018-04-10 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
RubyGems(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| rack-protection | 2.0.0.beta1 ... 2.0.0.rc6 (6 versions) | 2.0.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:24 UTCEPSS rescore
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- 2026-05-28 10:47 UTCEG score recompute
- 2026-05-28 10:47 UTCVendor advisory
- 2026-05-27 13:38 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2018-1000119?
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