CVE-2026-29181: OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)

Modified

AliasesUBUNTU-CVE-2026-29181DEBIAN-CVE-2026-29181CGA-22f7-v2rj-qf22+1955 more

Published 07-04-2026Last modified 17-09-2026

Vulnerability summary

CVE-2026-29181 is a high (CVSS 7.5) vulnerability in open-telemetry opentelemetry-go. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 56.3% of scored vulnerabilities. 1 public exploit is recorded.

Priority

Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?

CVSS score

7.5/10

010

High · v3.1 (CVE.org)

EPSS score

0.79%

0%100%

Low · -0.08 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits1github

Advisory lineage

Upstream 0 · Downstream 5 · Related 6

OPENSUSE-SU-2026:11173-1 OPENSUSE-SU-2026:21551-1 SUSE-SU-2026:23216-1 SUSE-SU-2026:23227-1 SUSE-SU-2026:2493-1 CGA-82CW-RCCF-76R2

Timeline

07-04-2026
PublishedVulnerability first disclosed.
17-09-2026
Last modifiedVulnerability information updated.

Description

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.

CVSS metrics

7 scores · 7 sources · 1 version

v3.17.5

EPSS trend

Probability

0.79%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

Decrease -0.08 pp

From 0.87% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found

githubUnverified
Opentelemetry Go
Maturity: poc

Weaknesses

CWE · root cause

CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard200 products

aactl< 0.4.12-r49
act< 0.2.87-r4
amazon-cloudwatch-agent-operator< 3.4.1-r1
amazon-cloudwatch-agent-operator-fips< 3.4.1-r1
amazon-eks-ami< 20260318-r3

amazon-eks-ami-fips< 20260318-r3
argo-events< 1.9.10-r17
argo-events-fips< 1.9.10-r10
argo-rollouts< 1.9.0-r9
argo-rollouts-fips< 1.9.0-r6
argocd-image-updater< 1.1.1-r9
auditbeat-8.17< 8.17.10-r15
auditbeat-fips-8.17< 8.17.10-r14
authentik-2025.12-go-server< 2025.12.4-r7
authentik-2026.2-go-server< 2026.2.1-r7
authentik-fips-2025.12-go-server< 2025.12.4-r6
authentik-fips-2026.2-go-server< 2026.2.1-r6
aws-efs-csi-driver< 3.0.1-r1
aws-efs-csi-driver-fips< 3.0.1-r1
aws-privateca-issuer< 1.8.1-r2
aws-privateca-issuer-fips< 1.8.1-r2
azuredisk-csi-1.31All versions (No fix recorded)
azuredisk-csi-fips-1.31All versions (No fix recorded)
azurefile-csi-1.31All versions (No fix recorded)
azurefile-csi-1.32All versions (No fix recorded)
azurefile-csi-fips-1.31All versions (No fix recorded)
azurefile-csi-fips-1.32All versions (No fix recorded)
blob-csi-1.23< 1.23.11-r70
blob-csi-1.24< 1.24.11-r19
blob-csi-fips-1.23< 1.23.11-r72
blob-csi-fips-1.24< 1.24.11-r19
buildah< 1.43.1-r2
buildah-fips< 1.43.1-r3
cadence-fips-server< 1.4.1-r1
cadence-server< 1.4.1-r1
cadvisor< 0.56.2-r16
cadvisor-fips< 0.56.2-r7
cephcsi< 3.16.2-r4
cephcsi-fips< 3.16.2-r5
cert-manager-1.18All versions (No fix recorded)
cert-manager-acmesolver-1.18All versions (No fix recorded)
cert-manager-cainjector-1.18All versions (No fix recorded)
cert-manager-cmctl< 2.4.1-r7
cert-manager-cmctl-fips< 2.4.1-r8
cert-manager-controller-1.18All versions (No fix recorded)
cert-manager-google-cas-issuer< 0.11.0-r9
cert-manager-google-cas-issuer-fips< 0.11.0-r9
cert-manager-openshift-routes< 0.9.0-r3
cert-manager-openshift-routes-fips< 0.9.0-r3
cert-manager-startupapicheck-1.18All versions (No fix recorded)
cert-manager-webhook-1.18All versions (No fix recorded)
chartmuseum< 0.16.5-r5
chartmuseum-fips< 0.16.5-r4
cilium-1.16All versions (No fix recorded)
cilium-1.16-clustermesh-apiserverAll versions (No fix recorded)
cilium-1.16-hubble-relayAll versions (No fix recorded)
cilium-1.16-operator-awsAll versions (No fix recorded)
cilium-1.16-operator-genericAll versions (No fix recorded)
cilium-1.17< 1.17.15-r3
cilium-1.17-clustermesh-apiserver< 1.17.15-r3
cilium-1.17-hubble-relay< 1.17.15-r3
cilium-1.17-operator-aws< 1.17.15-r3
cilium-1.17-operator-generic< 1.17.15-r3
cilium-1.18< 1.18.9-r2
cilium-1.18-clustermesh-apiserver< 1.18.9-r2
cilium-1.18-hubble-relay< 1.18.9-r2
cilium-1.18-operator-aws< 1.18.9-r2
cilium-1.18-operator-generic< 1.18.9-r2
cilium-1.19< 1.19.3-r3
cilium-1.19-clustermesh-apiserver< 1.19.3-r3
cilium-1.19-hubble-relay< 1.19.3-r3
cilium-1.19-operator-aws< 1.19.3-r3
cilium-1.19-operator-generic< 1.19.3-r3
cilium-cli< 0.19.2-r9
cilium-fips-1.16< 1.16.19-r15
cilium-fips-1.16-clustermesh-apiserver< 1.16.19-r15
cilium-fips-1.16-host-utils< 1.16.19-r15
cilium-fips-1.16-hubble-relay< 1.16.19-r15
cilium-fips-1.16-operator-aws< 1.16.19-r15
cilium-fips-1.16-operator-azure< 1.16.19-r15
cilium-fips-1.16-operator-generic< 1.16.19-r15
cilium-fips-1.17< 1.17.15-r4
cilium-fips-1.17-clustermesh-apiserver< 1.17.15-r4
cilium-fips-1.17-host-utils< 1.17.15-r4
cilium-fips-1.17-hubble-relay< 1.17.15-r4
cilium-fips-1.17-operator-aws< 1.17.15-r4
cilium-fips-1.17-operator-azure< 1.17.15-r4
cilium-fips-1.17-operator-generic< 1.17.15-r4
cilium-fips-1.18< 1.18.9-r2
cilium-fips-1.18-clustermesh-apiserver< 1.18.9-r2
cilium-fips-1.18-host-utils< 1.18.9-r2
cilium-fips-1.18-hubble-relay< 1.18.9-r2
cilium-fips-1.18-operator-aws< 1.18.9-r2
cilium-fips-1.18-operator-azure< 1.18.9-r2
cilium-fips-1.18-operator-generic< 1.18.9-r2
cilium-fips-1.19< 1.19.3-r4
cilium-fips-1.19-clustermesh-apiserver< 1.19.3-r4
cilium-fips-1.19-host-utils< 1.19.3-r4
cilium-fips-1.19-hubble-relay< 1.19.3-r4
cilium-fips-1.19-operator-aws< 1.19.3-r4
cilium-fips-1.19-operator-azure< 1.19.3-r4
cilium-fips-1.19-operator-generic< 1.19.3-r4
cinder-csi-plugin-fips< 1.35.0-r6
cloud-provider-aws-1.31-cloud-controller-managerAll versions (No fix recorded)
cloud-provider-aws-fips-1.31-cloud-controller-managerAll versions (No fix recorded)
cloud-provider-azure-cloud-controller-manager-1.31All versions (No fix recorded)
cloud-provider-azure-cloud-controller-manager-1.34< 1.34.8-r2
cloud-provider-azure-cloud-controller-manager-fips-1.31All versions (No fix recorded)
cloud-provider-azure-cloud-node-manager-1.31All versions (No fix recorded)
cloud-provider-azure-cloud-node-manager-1.34< 1.34.8-r2
cloud-provider-azure-cloud-node-manager-fips-1.31All versions (No fix recorded)
cloud-provider-vsphere< 1.36.0-r0
cloudflared< 2026.5.0-r1
cluster-api-1.8-capd-manager< 1.8.12-r17
cluster-api-1.8-clusterctl< 1.8.12-r17
cluster-api-1.8-controller< 1.8.12-r17
cluster-api-1.8-kubeadm-bootstrap-controller< 1.8.12-r17
cluster-api-1.8-kubeadm-control-plane-controller< 1.8.12-r17
cluster-api-ipam-provider-in-cluster< 1.1.0-r4
cluster-api-provider-vsphere< 1.15.2-r11
commercial-grafana-11.6< 11.6.16-r0
commercial-grafana-12.1All versions (No fix recorded)
commercial-grafana-12.2< 12.2.10-r0
commercial-grafana-12.3< 12.3.8-r0
commercial-grafana-12.4< 12.4.5-r0
commercial-kyverno-1.14All versions (No fix recorded)
commercial-kyverno-1.15All versions (No fix recorded)
commercial-kyverno-1.16All versions (No fix recorded)
commercial-kyverno-background-controller-1.14All versions (No fix recorded)
commercial-kyverno-background-controller-1.15All versions (No fix recorded)
commercial-kyverno-background-controller-1.16All versions (No fix recorded)
commercial-kyverno-cleanup-controller-1.14All versions (No fix recorded)
commercial-kyverno-cleanup-controller-1.15All versions (No fix recorded)
commercial-kyverno-cleanup-controller-1.16All versions (No fix recorded)
commercial-kyverno-reports-controller-1.14All versions (No fix recorded)
commercial-kyverno-reports-controller-1.15All versions (No fix recorded)
commercial-kyverno-reports-controller-1.16All versions (No fix recorded)
commercial-kyvernopre-1.14All versions (No fix recorded)
commercial-kyvernopre-1.15All versions (No fix recorded)
commercial-kyvernopre-1.16All versions (No fix recorded)
consul-1.22< 1.22.7-r1
consul-fips-1.22< 1.22.7-r1
consul-k8s-1.3-cli< 1.3.9-r36
consul-k8s-1.4-cli< 1.4.10-r22
consul-k8s-1.5-cli< 1.5.9-r22
consul-k8s-1.6-cli< 1.6.10-r15
consul-k8s-1.7< 1.7.13-r5
consul-k8s-1.7-cli< 1.7.13-r5
consul-k8s-1.9< 1.9.6-r5
consul-k8s-1.9-cli< 1.9.6-r5
consul-k8s-fips-1.3-cli< 1.3.9-r33
consul-k8s-fips-1.4-cli< 1.4.10-r22
consul-k8s-fips-1.5-cli< 1.5.9-r23
consul-k8s-fips-1.6-cli< 1.6.10-r17
consul-k8s-fips-1.7< 1.7.13-r5
consul-k8s-fips-1.7-cli< 1.7.13-r5
consul-k8s-fips-1.9< 1.9.6-r4
consul-k8s-fips-1.9-cli< 1.9.6-r4
containerd-2.1< 2.1.9-r3
containerd-2.2< 2.2.5-r2
containerd-stress-2.1< 2.1.9-r3
containerd-stress-2.2< 2.2.5-r2
coredns-1.13All versions (No fix recorded)
coredns-fips-1.13All versions (No fix recorded)
cri-tools< 1.36.0-r0
crictl< 1.36.0-r0
crossplane-provider-aws-acm< 2.5.0-r7
crossplane-provider-aws-acm-fips< 2.5.0-r6
crossplane-provider-aws-appflow< 2.5.0-r1
crossplane-provider-aws-appflow-fips< 2.5.0-r1
crossplane-provider-aws-athena< 2.5.0-r1
crossplane-provider-aws-athena-fips< 2.5.0-r1
crossplane-provider-aws-autoscaling< 2.5.0-r1
crossplane-provider-aws-autoscaling-fips< 2.5.0-r1
crossplane-provider-aws-backup< 2.5.0-r7
crossplane-provider-aws-backup-fips< 2.5.0-r6
crossplane-provider-aws-bedrockagent< 2.5.0-r1
crossplane-provider-aws-bedrockagent-fips< 2.5.0-r1
crossplane-provider-aws-chime< 2.5.0-r1
crossplane-provider-aws-chime-fips< 2.5.0-r1
crossplane-provider-aws-cloudformation< 2.5.0-r6
crossplane-provider-aws-cloudformation-fips< 2.5.0-r7
crossplane-provider-aws-cloudfront< 2.5.0-r6
crossplane-provider-aws-cloudfront-fips< 2.5.0-r7
crossplane-provider-aws-cloudsearch< 2.5.0-r1
crossplane-provider-aws-cloudsearch-fips< 2.5.0-r1
crossplane-provider-aws-cloudtrail< 2.5.0-r1
crossplane-provider-aws-cloudtrail-fips< 2.5.0-r1
crossplane-provider-aws-cloudwatch< 2.5.0-r1
crossplane-provider-aws-cloudwatch-fips< 2.5.0-r1
crossplane-provider-aws-cloudwatchevents< 2.5.0-r1
crossplane-provider-aws-cloudwatchevents-fips< 2.5.0-r1
crossplane-provider-aws-cloudwatchlogs< 2.5.0-r6
crossplane-provider-aws-cloudwatchlogs-fips< 2.5.0-r7
crossplane-provider-aws-cognitoidentity< 2.5.0-r8
crossplane-provider-aws-cognitoidentity-fips< 2.5.0-r9
crossplane-provider-aws-cognitoidp< 2.5.0-r6
crossplane-provider-aws-cognitoidp-fips< 2.5.0-r5
crossplane-provider-aws-dynamodb< 2.5.0-r6
crossplane-provider-aws-dynamodb-fips< 2.5.0-r7

Show all 200

1 vendor · 200 products · Showing 200 of 1058

References

18 links

github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-mh2q-q3fh-2475X Refsource CONFIRMREPORTAdvisoryWEBExploitVendor Advisory
access.redhat.com/security/cve/CVE-2026-29181VDB EntryX Refsource REDHATAdvisory
bugzilla.redhat.com/show_bug.cgi?id=2456252Issue TrackingX Refsource REDHATREPORT
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29181.jsonX Sadp Csaf VexWEB
access.redhat.com/errata/RHSA-2026:63140Vendor AdvisoryX Refsource REDHATAdvisory
access.redhat.com/errata/RHSA-2026:61314Vendor AdvisoryX Refsource REDHATAdvisory
access.redhat.com/errata/RHSA-2026:66521Vendor AdvisoryX Refsource REDHATAdvisory
access.redhat.com/errata/RHSA-2026:25271Vendor AdvisoryX Refsource REDHATAdvisory
access.redhat.com/errata/RHSA-2026:47735Vendor AdvisoryX Refsource REDHATAdvisory
ubuntu.com/security/CVE-2026-29181REPORT

Show all 18 references