Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Netty's io.netty:netty-codec-stomp is affected in versions from 4.2.0.Final before 4.2.16.Final and from 4.1.x before 4.1.136.Final. The STOMP encoder does not escape or validate newline characters in header values of CONNECT and CONNECTED frames, so an attacker who can place input into those headers can inject additional headers. Upgrade to 4.2.16.Final or 4.1.136.Final; the source gives no workaround beyond removing newline characters from untrusted header values.
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 |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0042, the 36th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:16 UTC First seen by agentprime
- 31 Oct 2026, 14:16 UTC Confirmed by OSV