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CVE-2019-18848The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string.
- 7.5HighCVSS base score
- 1.3%Exploitation in 30 daysEPSS · top 30% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The json-jwt gem before 1.11.0 for Ruby lacks an element count during the splitting of a JWE string.
Timeline
ID reserved
By mitre
- 1 day later
· 1 day 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:H/A:N |
- EPSS (exploitation in 30 days)
- 1.3% · top 30% of all CVEs (12 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
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsjson-jwtGHSA-cff7-6h4q-q5pj (opens in a new tab)
References
References3
- https://github.com/nov/json-jwt/commit/ada16e772906efdd035e3df49cb2ae372f0f948a (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/nov/json-jwt/compare/v1.10.2...v1.11.0 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20201001 [SECURITY] [DLA 2390-1] ruby-json-jwt security update (opens in a new tab)mailing-listx_refsource_MLISTx_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-2019-0742 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-cff7-6h4q-q5pj (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-2019-18848)Record last updated .