Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Netty's io.netty:netty-codec-redis package, versions from 4.2.0.Alpha1 before 4.2.13.Final and versions before 4.1.133.Final, does not reject CRLF characters in inline command, simple string and error messages. A remote attacker who can control the content of those messages may inject extra Redis commands or forge responses, which the source says can lead to high confidentiality and integrity impact. Upgrade to 4.2.13.Final or 4.1.133.Final. No other workaround is listed.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0022, the 12th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:17 UTC First seen by agentprime
- 31 Oct 2026, 14:17 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-rgrr-p7gp-5xj7
- OSV: GHSA-rgrr-p7gp-5xj7
- github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4
- github.com/netty/netty/security/advisories/GHSA-jq43-27x9-3v86
- github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7
- nvd.nist.gov/vuln/detail/CVE-2026-42586
- github.com/netty/netty
- redis.io/docs/reference/protocol-spec