Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2026-39829

Improper Verification of Cryptographic Signature

Published: May 22, 2026 | Modified: Jul 10, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-39829
CWEhttps://cwe.mitre.org/data/definitions/347.html

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

Weakness

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Affected Software

NameVendorStart VersionEnd Version
CryptoGolang*0.52.0 (excluding)
Red Hat Enterprise Linux 10RedHatbuildah-2:1.43.1-3.el10_2*
Red Hat Enterprise Linux 10RedHatpodman-7:5.8.2-4.el10_2*
Red Hat Enterprise Linux 8RedHatcontainer-tools:rhel8-8100020260701102925.afee755d*
Red Hat Enterprise Linux 9RedHatbuildah-2:1.43.1-2.el9_8*
Red Hat Enterprise Linux 9RedHatpodman-6:5.8.2-4.el9_8*
RHEM 1.0 for RHEL 9RedHatflightctl-0:1.0.3-1.el9em*
DevWorkspace Operator 0.42RedHatdevworkspace/devworkspace-project-clone-rhel9:1782400868*
DevWorkspace Operator 0.42RedHatdevworkspace/devworkspace-rhel9-operator:1782401674*
Multicluster engine for Kubernetes 2.9RedHatmulticluster-engine/hypershift-addon-rhel9-operator:1782411809*
Red Hat Advanced Cluster Security for Kubernetes 4.10RedHatadvanced-cluster-security/rhacs-roxctl-rhel8:1781686458*
Red Hat Advanced Cluster Security for Kubernetes 4.10RedHatadvanced-cluster-security/rhacs-scanner-rhel8:1782891789*
Red Hat Advanced Cluster Security for Kubernetes 4.10RedHatadvanced-cluster-security/rhacs-scanner-slim-rhel8:1782891789*
Red Hat Advanced Cluster Security for Kubernetes 4.11RedHatadvanced-cluster-security/rhacs-rhel9-operator:1783352589*
Red Hat Advanced Cluster Security for Kubernetes 4.9RedHatadvanced-cluster-security/rhacs-roxctl-rhel8:1781686446*
Red Hat Advanced Cluster Security for Kubernetes 4.9RedHatadvanced-cluster-security/rhacs-scanner-rhel8:1782891812*
Red Hat Advanced Cluster Security for Kubernetes 4.9RedHatadvanced-cluster-security/rhacs-scanner-slim-rhel8:1782891812*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-alert-exporter-rhel9:1783502022*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-alertmanager-proxy-rhel9:1783502465*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-api-rhel9:1783502025*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-cli-artifacts-rhel9:1783502494*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-db-setup-rhel9:1783502401*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-pam-issuer-rhel9:1783502403*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-periodic-rhel9:1783502022*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-telemetry-gateway-rhel9:1783502023*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-userinfo-proxy-rhel9:1783502029*
Red Hat Edge Manager 1.0RedHatrhem/flightctl-worker-rhel9:1783502445*
Red Hat OpenShift Builds 1.7.4RedHatopenshift-builds/openshift-builds-controller-rhel9:1783057515*
Red Hat OpenShift Builds 1.7.4RedHatopenshift-builds/openshift-builds-git-cloner-rhel9:1783057529*
Red Hat OpenShift Builds 1.7.4RedHatopenshift-builds/openshift-builds-image-bundler-rhel9:1783057884*
Red Hat OpenShift Builds 1.7.4RedHatopenshift-builds/openshift-builds-image-processing-rhel9:1783058067*
Red Hat OpenShift Builds 1.7.4RedHatopenshift-builds/openshift-builds-waiters-rhel9:1783057868*
Red Hat OpenShift Builds 1.7.4RedHatopenshift-builds/openshift-builds-webhook-rhel9:1783058284*
Red Hat Openshift Data Foundation 4.22RedHatodf4/cephcsi-rhel9:1782932114*
Red Hat Openshift Data Foundation 4.22RedHatodf4/cephcsi-rhel9-operator:1782931768*
Red Hat Openshift Data Foundation 4.22RedHatodf4/devicefinder-rhel9:1782932104*
Red Hat Openshift Data Foundation 4.22RedHatodf4/mcg-core-rhel9:1783536000*
Red Hat Openshift Data Foundation 4.22RedHatodf4/mcg-rhel9-operator:1783535989*
Red Hat Openshift Data Foundation 4.22RedHatodf4/ocs-client-console-rhel9:1783536515*
Red Hat Openshift Data Foundation 4.22RedHatodf4/ocs-client-rhel9-operator:1782932521*
Red Hat Openshift Data Foundation 4.22RedHatodf4/ocs-metrics-exporter-rhel9:1783018461*
Red Hat Openshift Data Foundation 4.22RedHatodf4/ocs-rhel9-operator:1783018421*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-blackbox-exporter-rhel9:1782932812*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-cli-rhel9:1783537001*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-cloudnative-pg-rhel9-operator:1782932919*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-console-rhel9:1783537586*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-cosi-sidecar-rhel9:1782932969*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-csi-addons-rhel9-operator:1782933015*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-csi-addons-sidecar-rhel9:1782933042*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-drbd-rhel9:1783537392*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-external-snapshotter-rhel9-operator:1782933235*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-external-snapshotter-sidecar-rhel9:1782933251*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-multicluster-console-rhel9:1783537955*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-multicluster-rhel9-operator:1782933417*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-must-gather-rhel9:1783537742*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odf-rhel9-operator:1782933602*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odr-rhel9-operator:1783019377*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odr-volsync-plugin-mover-rhel9:1782934054*
Red Hat Openshift Data Foundation 4.22RedHatodf4/odr-volsync-plugin-rhel9-operator:1782934036*
Red Hat Openshift Data Foundation 4.22RedHatodf4/rook-ceph-rhel9-operator:1782934284*
Red Hat OpenShift Dev Spaces 3.29RedHatdevspaces/traefik-rhel9:1782403274*
Red Hat Trusted Artifact Signer 1.4RedHatconforma-cli-stack-v1-4-1.4.2*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/ctlog-monitor-rhel9:1783330572*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/rekor-monitor-rhel9:1783330572*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/cosign-rhel9:1783330691*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/fetch-tsa-certs-rhel9:1783326690*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/gitsign-rhel9:1783332061*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/rekor-cli-rhel9:1783332625*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/fulcio-rhel9:1783326847*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/rekor-backfill-redis-rhel9:1783332625*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/rekor-server-rhel9:1783332625*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/timestamp-authority-rhel9:1783326690*
Red Hat Trusted Artifact Signer 1.4RedHatconforma-cli-stack-v1-4-1.4.2*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/model-transparency-cli-rhel9:1783183848*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/model-validation-rhel9-operator:1782992727*
Red Hat Trusted Artifact Signer 1.4RedHatrhtas/policy-controller-rhel9-operator:1782903492*
Golang-go.cryptoUbuntuquesting*
Google-guest-agentUbuntuquesting*
SnapdUbuntuquesting*

References

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