CVE-2020-7659 json
HTTP Request Smuggling in reel
published 2020-06-01 6 y ago modified 2026-07-08 4 mo ago also GHSA-x3v4-pxvm-63j8 , EUVD-2021-1225
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
reel through 0.6.1 allows Request Smuggling attacks due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks. Note: This project is deprecated, and is not maintained any more.
Exploit prediction
1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | reel | <=0.6.1 |
no fix listed |
Affected products
- n/a reel
Classification
- Weakness
-
- CWE-444 Inconsistent Interpretation of HTTP Requests
References
-
snyk.io
/vuln/SNYK-RUBY-REEL-569135
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-7659
advisory
-
github.com
/celluloid/reel
package
Sources
- CVE List CVE-2020-7659
- GitHub Advisory GHSA-x3v4-pxvm-63j8
- NVD CVE-2020-7659
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