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CVE-2026-26018

CoreDNS Loop Detection Denial of Service Vulnerability

7.5 HighFix available

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.24%Up 1.2 points since Mar 7, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.5

CoreDNS Loop Detection Denial of Service Vulnerability

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Record
CVE-2026-26018
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-337, CWE-770, CWE-400, CWE-1241
Updated
2026-11-02
EUVDEUVD-2026-10043 7.5

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Record
EUVD-2026-10043
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-h75p-j8xm-m278 7.5

CoreDNS Loop Detection Denial of Service Vulnerability

Executive Summary

A Denial of Service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process.

Technical Details

Vulnerability Description

The CoreDNS loop plugin is designed to detect forwarding loops by performing a self-test during server startup. The plugin generates a random query name (qname) using Go's math/rand package and sends an HINFO query to itself. If the server receives multiple matching queries, it assumes a forwarding loop exists and terminates.

The vulnerability arises from two design flaws:

  1. Predictable PRNG Seed: The random number generator is seeded with time.Now().UnixNano(), making the generated qname predictable if an attacker knows the approximate server start time.

  2. Fatal Error Handler: When the plugin detects what it believes is a loop (3+ matching HINFO queries), it calls log.Fatalf() which invokes os.Exit(1), immediately terminating the process without cleanup or recovery.

Affected Code

File: plugin/loop/setup.go

// PRNG seeded with predictable timestamp
var r = rand.New(time.Now().UnixNano())

// Qname generation using two consecutive PRNG calls
func qname(zone string) string {
    l1 := strconv.Itoa(r.Int())
    l2 := strconv.Itoa(r.Int())
    return dnsutil.Join(l1, l2, zone)
}

File: plugin/loop/loop.go

func (l *Loop) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
    // ... validation checks ...
    
    if state.Name() == l.qname {
        l.inc()  // Increment counter
    }

    if l.seen() > 2 {
        // FATAL: Terminates entire process
        log.Fatalf("Loop (%s -> %s) detected for zone %q...", ...)
    }
    
    // ...
}

File: plugin/pkg/log/log.go

func Fatalf(format string, v ...any) {
    logf(fatal, format, v...)
    os.Exit(1)  // Immediate process termination
}

Exploitation Window

The loop plugin remains active during the following conditions:

| Condition | Window Duration | Attack Feasibility | |-----------|-----------------|-------------------| | Healthy startup | 2 seconds | Requires precise timing | | Self-test failure (upstream unreachable) | 30 seconds | HIGH - Extended window | | Network degradation | Variable | Depends on retry behavior |

Attack Scenario

Primary Attack Vector: Network Degradation

When the upstream DNS server is unreachable (network partition, misconfiguration, outage), the loop plugin's self-test fails repeatedly. During this period:

  1. The loop plugin remains active for up to 30 seconds
  2. Each self-test attempt generates an HINFO query visible in CoreDNS logs
  3. An attacker with log access (shared Kubernetes cluster, centralized logging) can observe the qname
  4. The attacker sends 3 HINFO queries with the observed qname
  5. The server immediately crashes
┌──────────────────────────────────────────────────────────────────────────┐
│                         ATTACK TIMELINE                                  │
├──────────────────────────────────────────────────────────────────────────┤
│ T+0s     CoreDNS starts, PRNG seeded with UnixNano()                     │
│ T+0.5s   Self-test HINFO query sent (visible in logs)                    │
│ T+2s     Self-test fails (upstream timeout)                              │
│ T+3s     Retry #1 - counter resets, qname unchanged                      │
│…
Record
GHSA-h75p-j8xm-m278
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-337
Updated
2026-11-02
NVD 7.5

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Record
CVE-2026-26018
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-337, CWE-400, CWE-770, CWE-1241
Updated
2026-11-02
OSV 7.5

CoreDNS Loop Detection Denial of Service Vulnerability

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Record
CVE-2026-26018
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-337, CWE-400, CWE-770
Updated
2026-11-02
OSVGHSA-h75p-j8xm-m278 7.5

CoreDNS Loop Detection Denial of Service Vulnerability

Executive Summary

A Denial of Service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process.

Technical Details

Vulnerability Description

The CoreDNS loop plugin is designed to detect forwarding loops by performing a self-test during server startup. The plugin generates a random query name (qname) using Go's math/rand package and sends an HINFO query to itself. If the server receives multiple matching queries, it assumes a forwarding loop exists and terminates.

The vulnerability arises from two design flaws:

  1. Predictable PRNG Seed: The random number generator is seeded with time.Now().UnixNano(), making the generated qname predictable if an attacker knows the approximate server start time.

  2. Fatal Error Handler: When the plugin detects what it believes is a loop (3+ matching HINFO queries), it calls log.Fatalf() which invokes os.Exit(1), immediately terminating the process without cleanup or recovery.

Affected Code

File: plugin/loop/setup.go

// PRNG seeded with predictable timestamp
var r = rand.New(time.Now().UnixNano())

// Qname generation using two consecutive PRNG calls
func qname(zone string) string {
    l1 := strconv.Itoa(r.Int())
    l2 := strconv.Itoa(r.Int())
    return dnsutil.Join(l1, l2, zone)
}

File: plugin/loop/loop.go

func (l *Loop) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
    // ... validation checks ...
    
    if state.Name() == l.qname {
        l.inc()  // Increment counter
    }

    if l.seen() > 2 {
        // FATAL: Terminates entire process
        log.Fatalf("Loop (%s -> %s) detected for zone %q...", ...)
    }
    
    // ...
}

File: plugin/pkg/log/log.go

func Fatalf(format string, v ...any) {
    logf(fatal, format, v...)
    os.Exit(1)  // Immediate process termination
}

Exploitation Window

The loop plugin remains active during the following conditions:

| Condition | Window Duration | Attack Feasibility | |-----------|-----------------|-------------------| | Healthy startup | 2 seconds | Requires precise timing | | Self-test failure (upstream unreachable) | 30 seconds | HIGH - Extended window | | Network degradation | Variable | Depends on retry behavior |

Attack Scenario

Primary Attack Vector: Network Degradation

When the upstream DNS server is unreachable (network partition, misconfiguration, outage), the loop plugin's self-test fails repeatedly. During this period:

  1. The loop plugin remains active for up to 30 seconds
  2. Each self-test attempt generates an HINFO query visible in CoreDNS logs
  3. An attacker with log access (shared Kubernetes cluster, centralized logging) can observe the qname
  4. The attacker sends 3 HINFO queries with the observed qname
  5. The server immediately crashes
┌──────────────────────────────────────────────────────────────────────────┐
│                         ATTACK TIMELINE                                  │
├──────────────────────────────────────────────────────────────────────────┤
│ T+0s     CoreDNS starts, PRNG seeded with UnixNano()                     │
│ T+0.5s   Self-test HINFO query sent (visible in logs)                    │
│ T+2s     Self-test fails (upstream timeout)                              │
│ T+3s     Retry #1 - counter resets, qname unchanged                      │
│…
Record
GHSA-h75p-j8xm-m278
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-337
Updated
2026-11-02
Show 8 moreShow less
OSVOESA-2026-3184 7.5

coredns security update

CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins.

Security Fix(es):

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.(CVE-2026-26018)

Record
OESA-2026-3184
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-79500 No score

CVE-2026-26018 affecting package coredns for versions less than 1.11.4-15

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Record
AZL-79500
Updated
2026-11-05
OSVAZL-79529 No score

CVE-2026-26018 affecting package coredns 1.11.1-25

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Record
AZL-79529
Updated
2026-11-02
OSVGO-2026-4635 No score

CoreDNS Loop Detection Denial of Service Vulnerability in github.com/coredns/coredns

CoreDNS Loop Detection Denial of Service Vulnerability in github.com/coredns/coredns

Record
GO-2026-4635
Updated
2026-11-02
OSVopenSUSE-SU-2026:10297-1 No score

coredns-1.14.2-1.1 on GA media

These are all security issues fixed in the coredns-1.14.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10297-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20619-1 No score

Security update for coredns

This update for coredns fixes the following issues:

Changes in coredns:

  • Update to version 1.14.2:

    • plugin/reload: Allow disabling jitter with 0s
    • bump deps
    • plugin/forward: fix parsing error when handling TLS+IPv6 address
    • plugin/loop: use crypto/rand for query name generation
    • plugin: reorder rewrite before acl to prevent bypass
    • fix(rewrite): fix cname target rewrite for CNAME chains
    • fix(kubernetes): panic on empty ListenHosts
    • chore: bump minimum Go version to 1.25
    • feat(proxyproto): add proxy protocol support
    • refactor(cache): modernize with generics
    • Add metadata for response Type and Class to Log
    • docs: clarify kubernetes auth docs
    • fix: return SOA and NS records when queried for a record CNAMEd to origin

  • fixes bsc#1259320 CVE-2026-26017

  • fixes bsc#1259319 CVE-2026-26018

  • address more unstable unstable tests under aarch64 and s390x

  • Update to version 1.14.1:

    • This release primarily addresses security vulnerabilities affecting Go versions prior to Go 1.25.6 and Go 1.24.12 (CVE-2025-61728, CVE-2025-61726, CVE-2025-68121, CVE-2025-61731, CVE-2025-68119). It also includes performance improvements to the proxy plugin via multiplexed connections, along with various documentation updates.
Record
openSUSE-SU-2026:20619-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:21483-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
  • GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
  • GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
  • GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
  • GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
  • GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
  • GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
  • GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
  • GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
  • GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
  • GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
  • GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
  • GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
  • GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
  • GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
  • GO-2026-5933 GHSA-3g4q-2f67-2gvh
  • GO-2026-5934 GHSA-59qp-cfj3-rp64
  • GO-2026-5935 GHSA-7856-g3gv-9wq8
  • GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
  • GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
  • GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
  • GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
  • GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
  • GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
  • GO-2026-5942 CVE-2026-46600
  • GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
  • GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
  • GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
  • GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
  • GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
  • GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
  • GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
  • GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
  • GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
  • GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
  • GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
  • GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
  • GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
  • GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
  • GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
  • GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
  • GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
  • GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
  • GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
  • GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
  • GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
  • GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
  • GO-2026-5969 GHSA-g936-7jqj-mwv8
  • GO-2026-5970 CVE-2026-56852
  • GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
  • GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
  • GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
  • GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
  • GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
  • GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
  • GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
  • GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
  • GO-2026-5981 GHSA-mqxv-9rm6-w8qc
  • GO-2026-5982 GHSA-pqg7-v6wh-3pfp
  • GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
  • GO-2026-5985 GHSA-7rx3-5wx3-5v76
  • GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
  • GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
  • GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
  • GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
  • GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
  • GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
  • GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
  • GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
  • GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
  • GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
  • GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
  • GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
  • GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
  • GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
  • GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
  • GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…
Record
openSUSE-SU-2026:21483-1
Updated
2026-11-02
OSVSUSE-SU-2026:1042-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260317T205859 2026-03-17T20:58:59Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:
    • GO-2026-4360 CVE-2026-0528 GHSA-w2gr-585j-r428
    • GO-2026-4513
    • GO-2026-4514
    • GO-2026-4518
    • GO-2026-4526
    • GO-2026-4549 CVE-2026-24005 GHSA-9fj4-3849-rv9g
    • GO-2026-4550 CVE-2026-1229 GHSA-q9hv-hpm4-hj6x
    • GO-2026-4551 CVE-2026-27575 GHSA-3ccg-x393-96v8
    • GO-2026-4552 CVE-2026-27116 GHSA-4qgr-4h56-8895
    • GO-2026-4553 CVE-2026-27616 GHSA-7jp5-298q-jg98
    • GO-2026-4554 CVE-2026-27730 GHSA-p2v6-84h2-5x4r
    • GO-2026-4556 CVE-2026-27819 GHSA-42wg-38gx-85rh
    • GO-2026-4557 CVE-2026-26186 GHSA-49xw-vfc4-7p43
    • GO-2026-4558 CVE-2026-27808 GHSA-mpf7-p9x7-96r3
    • GO-2026-4560 CVE-2026-27465 GHSA-2v6m-6xw3-6467
    • GO-2026-4561 CVE-2026-25963 GHSA-5jvp-m9h4-253h
    • GO-2026-4562 CVE-2026-27900 GHSA-5rc7-2jj6-mp64
    • GO-2026-4563 CVE-2026-24004 GHSA-9pm7-6g36-6j78
    • GO-2026-4564 CVE-2026-23999 GHSA-ppwx-5jq7-px2w
    • GO-2026-4565 CVE-2026-22728 GHSA-465p-v42x-3fmj
    • GO-2026-4566 CVE-2026-27899 GHSA-5rmx-256w-8mj9
    • GO-2026-4567 CVE-2026-27965 GHSA-8g8j-r87h-p36x
    • GO-2026-4568 GHSA-gj6x-q8rh-wj6x
    • GO-2026-4569 CVE-2026-27896 GHSA-wvj2-96wp-fq3f
    • GO-2026-4570 CVE-2026-27969 GHSA-r492-hjgh-c9gw
    • GO-2026-4571 CVE-2026-27734 GHSA-phwh-4f42-gwf3
    • GO-2026-4572 CVE-2026-27946 GHSA-282g-fhmx-xf54
    • GO-2026-4573 CVE-2026-27840 GHSA-6mq3-xmgp-pjm5
    • GO-2026-4574 CVE-2026-27945 GHSA-7777-fhq9-592v
    • GO-2026-4575 CVE-2026-28268 GHSA-rfjg-6m84-crj2
    • GO-2026-4576 CVE-2026-28280 GHSA-4rv8-5cmm-2r22
    • GO-2026-4577 CVE-2026-28407 GHSA-945p-3jhm-6rcp
    • GO-2026-4578 CVE-2025-14443 GHSA-gxvv-45f6-3ch8
    • GO-2026-4579 CVE-2026-28279 GHSA-rchw-322g-f7rm
    • GO-2026-4580 CVE-2026-28406 GHSA-6rxq-q92g-4rmf
    • GO-2026-4581 GHSA-xfx2-prg5-jq3g
    • GO-2026-4583 GHSA-54p8-x2m9-c593
    • GO-2026-4584 CVE-2026-28342 GHSA-pc8g-78pf-4xrp
    • GO-2026-4585 CVE-2026-28492 GHSA-mr74-928f-rw69
    • GO-2026-4586 CVE-2026-28789 GHSA-45m3-398w-m2m9
    • GO-2026-4587 CVE-2026-28790 GHSA-4fqm-6fmh-82mq
    • GO-2026-4588 CVE-2026-29049 GHSA-7rp8-r62p-q6wc
    • GO-2026-4589 CVE-2021-25320 GHSA-gqf8-rvrh-g7w6
    • GO-2026-4590 GHSA-hwm2-4ph6-w6m5
    • GO-2026-4591 CVE-2025-62879 GHSA-wj3p-5h3x-c74q
    • GO-2026-4592 CVE-2026-29073 GHSA-jqwg-75qf-vmf9
    • GO-2026-4593 CVE-2026-26998 GHSA-fw45-f5q2-2p4x
    • GO-2026-4594 CVE-2026-26999 GHSA-xw98-5q62-jx94
    • GO-2026-4595 CVE-2026-3351 GHSA-crmg-9m86-636r
    • GO-2026-4596 CVE-2026-29183 GHSA-6865-qjcf-286f
    • GO-2026-4597 CVE-2026-29054 GHSA-92mv-8f8w-wq52
    • GO-2026-4598 CVE-2026-29042 GHSA-95fj-3w7g-4r27
    • GO-2026-4599 CVE-2026-27137
    • GO-2026-4600 CVE-2026-27138
    • GO-2026-4601 CVE-2026-25679
    • GO-2026-4602 CVE-2026-27139
    • GO-2026-4603 CVE-2026-27142
    • GO-2026-4604 CVE-2026-29193 GHSA-25rw-g6ff-fmg8
    • GO-2026-4605 CVE-2026-29192 GHSA-6rx5-m2rc-hmf7
    • GO-2026-4606 CVE-2026-29188 GHSA-79pf-vx4x-7jmm
    • GO-2026-4607 CVE-2026-29191 GHSA-pr34-2v5x-6qjq
    • GO-2026-4608 CVE-2026-29771 GHSA-rhr9-hgcm-x289
    • GO-2026-4609 CVE-2026-29781 GHSA-hx52-cv84-jr5v
    • GO-2026-4610 CVE-2025-15558 GHSA-p436-gjf2-799p
    • GO-2026-4612 CVE-2026-28683 GHSA-3c22-5j5m-4jq7
    • GO-2026-4613 CVE-2026-28682 GHSA-c36c-7pc2-f2ph
    • GO-2026-4614 CVE-2026-27944 GHSA-g9w5-qffc-6762
    • GO-2026-4615 CVE-2026-29060 GHSA-m2hx-wjxc-9fp4
    • GO-2026-4616 CVE-2026-25921 GHSA-cj4v-437j-jq4c
    • GO-2026-4617 CVE-2026-26194 GHSA-v9vm-r24h-6rqm
    • GO-2026-4618 CVE-2026-26195 GHSA-vgvf-m4fw-938j
    • GO-2026-4619 CVE-2026-26196 GHSA-x9p5-w45c-7ffc
    • GO-2026-4620 CVE-2026-26022 GHSA-xrcr-gmf5-2r8j
    • GO-2026-4621 GHSA-fwhj-785h-43hh
    • GO-2026-4622 CVE-2026-30223 GHSA-g962-2j28-3cg9
    • GO-2026-4623 CVE-2026-30224 GHSA-gq2m-77hf-vwgh
    • GO-2026-4624 CVE-2026-29084 GHSA-hcff-qv74-7hr4
    • GO-2026-4625 CVE-2026-30225 GHSA-p443-p7w5-2f7f
    • GO-2026-4626 CVE-2026-29061…
Record
SUSE-SU-2026:1042-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/coredns/coredns
Go
 before 1.14.2
1.14.2
coredns
Azure Linux:3
 before 1.11.4-15
1.11.4-15
coredns
Azure Linux:2
 through 1.11.1-25 None known
coredns
openEuler:24.03-LTS-SP4
 before 1.7.0-1.7.oe2403sp4
1.7.0-1.7.oe2403sp4
coredns
openEuler:20.03-LTS-SP4
 before 1.7.0-1.5.oe2003sp4
1.7.0-1.5.oe2003sp4
coredns
openEuler:22.03-LTS-SP4
 before 1.7.0-1.7.oe2203sp4
1.7.0-1.7.oe2203sp4
coredns
openEuler:24.03-LTS-SP1
 before 1.7.0-1.7.oe2403sp1
1.7.0-1.7.oe2403sp1
coredns
openEuler:24.03-LTS-SP3
 before 1.7.0-1.7.oe2403sp3
1.7.0-1.7.oe2403sp3
govulncheck-vulndb
openSUSE:Leap 15.6
From an advisory covering 124 CVEs
 before 0.0.20260317T205859-150000.1.152.1
0.0.20260317T205859-150000.1.152.1
coredns
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 1.14.2-1.1
1.14.2-1.1
coredns
openSUSE:Leap 16.0
From an advisory covering 7 CVEs
 before 1.14.2-bp160.1.1
1.14.2-bp160.1.1
govulncheck-vulndb
openSUSE:Leap 16.0
From an advisory covering 1734 CVEs
 before 0.0.20260723T184607-160000.1.1
0.0.20260723T184607-160000.1.1

History

History
RecordedChangedSources
affected
factsOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-26018 is a high vulnerability (CVSS 7.5) in Coredns, published March 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.24%, the 69th percentile. Fixed in github.com/coredns/coredns 1.14.2.

References

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Left out here: 1,550 references and the rest of 4 source descriptions. The JSON record has them.

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