CVE-2026-62299
- Source
- https://cve.org/CVERecord?id=CVE-2026-62299
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62299.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-62299
- Aliases
-
- GHSA-9pmm-cxww-rrr7
- Downstream
- Published
- 2026-07-16T19:44:36.475Z
- Modified
- 2026-08-12T03:51:23.206121197Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- CoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT record
- Details
-
CoreDNS is a DNS server written in Go. Prior to 1.14.5, the CoreDNS rewrite plugin supports edns0 rewrite rules with an optional revert flag, and two response rules, edns0SetResponseRule and edns0ReplaceResponseRule[T] in plugin/rewrite/edns0.go, call res.IsEdns0() and immediately dereference the returned *dns.OPT without a nil check when a downstream plugin returns a response with no OPT record. A remote, unauthenticated client can send a single ordinary DNS query matching a rewrite edns0 <local|nsid|subnet> <set|append|replace> ... revert rule, causing ResponseReverter in plugin/rewrite/reverter.go to panic, return SERVFAIL, and degrade availability, or crash the CoreDNS process if the debug directive disables recovery. This issue is fixed in version 1.14.5.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62299.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-476" ] }- References
-
- https://github.com/coredns/coredns/releases/tag/v1.14.5
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62299.json
- https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7
- https://nvd.nist.gov/vuln/detail/CVE-2026-62299
- https://github.com/coredns/coredns/commit/fc447d0658b093edc8cd29a6b171216a44a644c2
- https://github.com/coredns/coredns/pull/8190
Affected packages
Git / github.com/coredns/coredns
Affected ranges
- Type
- GIT
- Repo
- https://github.com/coredns/coredns
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "source": [ "CPE_RANGE", "REFERENCES" ], "cpe": "cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "1.14.5" } ] }