Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
CoreDNS versions before 1.14.2 are vulnerable to a denial of service in the loop detection plugin, which generates a predictable query name and terminates the process when it sees repeated matching queries. A remote attacker with network access to the DNS port who can also observe the generated query name in logs can send crafted queries to crash the server, disrupting DNS resolution. Upgrade to CoreDNS 1.14.2 or later.
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 |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.012, the 69th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:14 UTC First seen by agentprime
- 31 Oct 2026, 14:14 UTC Confirmed by OSV