Vulnerability · Published Apr 8, 2026 · Assigned by Go

CVE-2026-32280Unexpected work during chain building in crypto/x509

High 7.5

In plain English

A high-severity resource allocation without limits in crypto/x509 from Go standard library. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 49.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8aardvark-dns2:1.10.1-2.module_el8.10.0+3901+4b80ecd7ALSA-2026:33722
AlmaLinux:8aardvark-dns2:1.10.1-2.module_el8.10.0+3909+6e1c1eb7ALSA-2026:33722
AlmaLinux:8aardvark-dns2:1.10.1-2.module_el8.10.0+4089+ce72bbbeALSA-2026:33722
AlmaLinux:8aardvark-dns2:1.10.1-2.module_el8.10.0+4047+545787c4ALSA-2026:33722
AlmaLinux:10buildah2:1.43.1-2.el10_2ALSA-2026:29195
AlmaLinux:8buildah2:1.33.14-3.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9buildah2:1.43.1-2.el9_8ALSA-2026:29455
AlmaLinux:10buildah-tests2:1.43.1-2.el10_2ALSA-2026:29195
AlmaLinux:8buildah-tests2:1.33.14-3.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:8buildah-tests2:1.33.14-3.module_el8.10.0+4136+16425343ALSA-2026:33722
AlmaLinux:9buildah-tests2:1.43.1-2.el9_8ALSA-2026:29455
AlmaLinux:8cockpit-podman84.1-1.module_el8.10.0+4102+6c76e544ALSA-2026:33722
AlmaLinux:8conmon3:2.1.10-1.module_el8.10.0+4068+0e21408fALSA-2026:33722
AlmaLinux:8conmon3:2.1.10-1.module_el8.10.0+4090+91932338ALSA-2026:33722
AlmaLinux:8conmon3:2.1.10-1.module_el8.10.0+3970+8445edf6ALSA-2026:33722
AlmaLinux:8container-selinux2:2.229.0-3.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:8containernetworking-plugins1:1.4.0-8.module_el8.10.0+4136+16425343ALSA-2026:33722
AlmaLinux:9containernetworking-plugins1:1.9.0-3.el9_8ALSA-2026:29703
AlmaLinux:8containers-common2:1-82.module_el8.10.0+3876+e55593a8ALSA-2026:33722
AlmaLinux:8containers-common2:1-82.module_el8.10.0+3901+4b80ecd7ALSA-2026:33722
AlmaLinux:8containers-common2:1-82.module_el8.10.0+4089+ce72bbbeALSA-2026:33722
AlmaLinux:8crit3.18-5.module_el8.10.0+3845+87b84552ALSA-2026:33722
AlmaLinux:8crit3.18-5.module_el8.10.0+4047+545787c4ALSA-2026:33722
AlmaLinux:8crit3.18-5.module_el8.10.0+3901+4b80ecd7ALSA-2026:33722
AlmaLinux:8crit3.18-5.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8criu3.18-5.module_el8.10.0+3876+e55593a8ALSA-2026:33722
AlmaLinux:8criu3.18-5.module_el8.10.0+3909+6e1c1eb7ALSA-2026:33722
AlmaLinux:8criu3.18-5.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8criu3.18-5.module_el8.10.0+4089+ce72bbbeALSA-2026:33722
AlmaLinux:8criu-devel3.18-5.module_el8.10.0+4068+0e21408fALSA-2026:33722
AlmaLinux:8criu-devel3.18-5.module_el8.10.0+3858+6ad51f9fALSA-2026:33722
AlmaLinux:8criu-devel3.18-5.module_el8.10.0+4016+efd18bf8ALSA-2026:33722
AlmaLinux:8criu-devel3.18-5.module_el8.10.0+4089+ce72bbbeALSA-2026:33722
AlmaLinux:8criu-libs3.18-5.module_el8.10.0+3970+8445edf6ALSA-2026:33722
AlmaLinux:8criu-libs3.18-5.module_el8.10.0+4082+f7f0c95eALSA-2026:33722
AlmaLinux:8criu-libs3.18-5.module_el8.10.0+3926+f12484f5ALSA-2026:33722
AlmaLinux:8criu-libs3.18-5.module_el8.10.0+3909+6e1c1eb7ALSA-2026:33722
AlmaLinux:8crun1.14.3-2.module_el8.10.0+4102+6c76e544ALSA-2026:33722
AlmaLinux:8crun1.14.3-2.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8crun1.14.3-2.module_el8.10.0+4082+f7f0c95eALSA-2026:33722
AlmaLinux:10delve1.26.1-2.el10_2ALSA-2026:23102
AlmaLinux:8delve1.25.2-1.module_el8.10.0+4074+24330916ALSA-2026:10704
AlmaLinux:8fuse-overlayfs1.13-1.module_el8.10.0+3792+03eaed9cALSA-2026:33722
AlmaLinux:8fuse-overlayfs1.13-1.module_el8.10.0+4047+545787c4ALSA-2026:33722
AlmaLinux:8fuse-overlayfs1.13-1.module_el8.10.0+4082+f7f0c95eALSA-2026:33722
AlmaLinux:8fuse-overlayfs1.13-1.module_el8.10.0+4068+0e21408fALSA-2026:33722
AlmaLinux:10git-lfs3.7.1-4.el10_2ALSA-2026:19133
AlmaLinux:8git-lfs3.4.1-10.el8_10ALSA-2026:16875
AlmaLinux:9git-lfs3.6.1-8.el9_7.1ALSA-2026:14200
AlmaLinux:9git-lfs3.7.1-4.el9_8ALSA-2026:19350
AlmaLinux:10go-fdo-client1.0.0-4.el10_2ALSA-2026:22141
AlmaLinux:10go-fdo-server1.0.1-2.el10_2ALSA-2026:22141
AlmaLinux:10go-fdo-server-manufacturer1.0.1-2.el10_2ALSA-2026:22141
AlmaLinux:10go-fdo-server-owner1.0.1-2.el10_2ALSA-2026:22141
AlmaLinux:10go-fdo-server-rendezvous1.0.1-2.el10_2ALSA-2026:22141
AlmaLinux:8go-toolset1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang-bin1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang-docs1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang-misc1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang-race1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang-src1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8golang-tests1.25.9-1.module_el8.10.0+4167+2e2e20ddALSA-2026:10704
AlmaLinux:8grafana9.2.10-30.el8_10ALSA-2026:11507
AlmaLinux:8grafana-pcp5.1.1-14.el8_10ALSA-2026:11514
AlmaLinux:8grafana-selinux9.2.10-30.el8_10ALSA-2026:11507
AlmaLinux:8libslirp4.4.0-2.module_el8.10.0+4089+ce72bbbeALSA-2026:33722
AlmaLinux:8libslirp4.4.0-2.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8libslirp4.4.0-2.module_el8.10.0+4090+91932338ALSA-2026:33722
AlmaLinux:8libslirp4.4.0-2.module_el8.10.0+4023+db236c53ALSA-2026:33722
AlmaLinux:8libslirp-devel4.4.0-2.module_el8.10.0+3970+8445edf6ALSA-2026:33722
AlmaLinux:8libslirp-devel4.4.0-2.module_el8.10.0+4082+f7f0c95eALSA-2026:33722
AlmaLinux:8libslirp-devel4.4.0-2.module_el8.10.0+4102+6c76e544ALSA-2026:33722
AlmaLinux:8libslirp-devel4.4.0-2.module_el8.10.0+4068+0e21408fALSA-2026:33722
AlmaLinux:8netavark2:1.10.3-1.module_el8.10.0+3970+8445edf6ALSA-2026:33722
AlmaLinux:8netavark2:1.10.3-1.module_el8.10.0+4082+f7f0c95eALSA-2026:33722
AlmaLinux:8netavark2:1.10.3-1.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8netavark2:1.10.3-1.module_el8.10.0+4023+db236c53ALSA-2026:33722
AlmaLinux:8oci-seccomp-bpf-hook1.2.10-1.module_el8.10.0+3909+6e1c1eb7ALSA-2026:33722
AlmaLinux:8oci-seccomp-bpf-hook1.2.10-1.module_el8.10.0+4068+0e21408fALSA-2026:33722
AlmaLinux:8oci-seccomp-bpf-hook1.2.10-1.module_el8.10.0+4047+545787c4ALSA-2026:33722
AlmaLinux:8oci-seccomp-bpf-hook1.2.10-1.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:10opentelemetry-collector0.144.0-2.el10_2ALSA-2026:19135
AlmaLinux:9opentelemetry-collector0.144.0-2.el9_8ALSA-2026:19353
AlmaLinux:10osbuild-composer165.1-3.el10_2.1.alma.3ALSA-2026:49526
AlmaLinux:8osbuild-composer101.5-1.el8_10.alma.1ALSA-2026:48790
AlmaLinux:9osbuild-composer165.1-4.el9_8.alma.1ALSA-2026:49838
AlmaLinux:10osbuild-composer-core165.1-3.el10_2.1.alma.3ALSA-2026:49526
AlmaLinux:8osbuild-composer-core101.5-1.el8_10.alma.1ALSA-2026:48790
AlmaLinux:9osbuild-composer-core165.1-4.el9_8.alma.1ALSA-2026:49838
AlmaLinux:10osbuild-composer-worker165.1-3.el10_2.1.alma.3ALSA-2026:49526
AlmaLinux:8osbuild-composer-worker101.5-1.el8_10.alma.1ALSA-2026:48790
AlmaLinux:9osbuild-composer-worker165.1-4.el9_8.alma.1ALSA-2026:49838
AlmaLinux:10podman7:5.8.2-3.el10_2.alma.1ALSA-2026:24470
AlmaLinux:8podman4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9podman6:5.8.2-3.el9_8ALSA-2026:26447
AlmaLinux:8podman-catatonit4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:10podman-docker7:5.8.2-3.el10_2.alma.1ALSA-2026:24470
AlmaLinux:8podman-docker4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9podman-docker6:5.8.2-3.el9_8ALSA-2026:26447
AlmaLinux:8podman-gvproxy4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:8podman-plugins4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9podman-plugins6:5.8.2-3.el9_8ALSA-2026:26447
AlmaLinux:10podman-remote7:5.8.2-3.el10_2.alma.1ALSA-2026:24470
AlmaLinux:8podman-remote4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9podman-remote6:5.8.2-3.el9_8ALSA-2026:26447
AlmaLinux:10podman-tests7:5.8.2-3.el10_2.alma.1ALSA-2026:24470
AlmaLinux:8podman-tests4:4.9.4-31.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9podman-tests6:5.8.2-3.el9_8ALSA-2026:26447
AlmaLinux:8python3-criu3.18-5.module_el8.10.0+3876+e55593a8ALSA-2026:33722
AlmaLinux:8python3-criu3.18-5.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8python3-criu3.18-5.module_el8.10.0+3901+4b80ecd7ALSA-2026:33722
AlmaLinux:8python3-criu3.18-5.module_el8.10.0+3970+8445edf6ALSA-2026:33722
AlmaLinux:8python3-podman4.9.0-3.module_el8.10.0+4016+efd18bf8ALSA-2026:33722
AlmaLinux:8runc4:1.2.9-4.module_el8.10.0+4136+16425343ALSA-2026:33722
AlmaLinux:9runc4:1.4.2-2.el9_8ALSA-2026:29702
AlmaLinux:10skopeo2:1.22.2-2.el10_2ALSA-2026:29035
AlmaLinux:8skopeo2:1.14.6-2.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9skopeo2:1.22.2-6.el9_8ALSA-2026:28074
AlmaLinux:10skopeo-tests2:1.22.2-2.el10_2ALSA-2026:29035
AlmaLinux:8skopeo-tests2:1.14.6-2.module_el8.10.0+4211+49ea0979ALSA-2026:33722
AlmaLinux:9skopeo-tests2:1.22.2-6.el9_8ALSA-2026:28074
AlmaLinux:8slirp4netns1.2.3-1.module_el8.10.0+3926+f12484f5ALSA-2026:33722
AlmaLinux:8slirp4netns1.2.3-1.module_el8.10.0+4082+f7f0c95eALSA-2026:33722
AlmaLinux:8slirp4netns1.2.3-1.module_el8.10.0+4023+db236c53ALSA-2026:33722
AlmaLinux:8slirp4netns1.2.3-1.module_el8.10.0+4047+545787c4ALSA-2026:33722
AlmaLinux:8toolbox0.0.99.5.1-1.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8toolbox-tests0.0.99.5.1-1.module_el8.10.0+4120+03ad4b47ALSA-2026:33722
AlmaLinux:8udica0.2.6-21.module_el8.10.0+4068+0e21408fALSA-2026:33722
Alpine:v3.23go1.25.9-r0ALPINE-CVE-2026-32280
Alpine:v3.24go1.26.2-r0ALPINE-CVE-2026-32280
Alpine:v3.24rclone1.73.5-r0ALPINE-CVE-2026-32280
Debian:12golang-1.19no fix listedDEBIAN-CVE-2026-32280
Debian:13golang-1.24no fix listedDEBIAN-CVE-2026-32280
Debian:14golang-1.261.26.2-1DEBIAN-CVE-2026-32280
Gostdlib1.25.9, 1.26.2GO-2026-4947
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+1948+4b5cd4a9RLSA-2026:33722
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+1874+ce489889RLSA-2026:33722
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+40047+0c0a73f4RLSA-2026:33722
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+1880+8e896d1bRLSA-2026:33722
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+1896+b18fa106RLSA-2026:33722
Rocky Linux:8aardvark-dns2:1.10.1-2.module+el8.10.0+2001+6a33db9fRLSA-2026:33722
Rocky Linux:10buildah2:1.43.1-2.el10_2RLSA-2026:29195
Rocky Linux:8buildah2:1.33.14-3.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:9buildah2:1.43.1-2.el9_8RLSA-2026:29455
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+2001+6a33db9fRLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1843+6892ab28RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1825+623b0c20RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1874+ce489889RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1872+2e18eb19RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1815+5fe7415eRLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1948+4b5cd4a9RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1896+b18fa106RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+1880+8e896d1bRLSA-2026:33722
Rocky Linux:8cockpit-podman0:84.1-1.module+el8.10.0+40047+0c0a73f4RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1948+4b5cd4a9RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1874+ce489889RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1843+6892ab28RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+2001+6a33db9fRLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1880+8e896d1bRLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1815+5fe7415eRLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+40047+0c0a73f4RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1896+b18fa106RLSA-2026:33722
Rocky Linux:8conmon3:2.1.10-1.module+el8.10.0+1872+2e18eb19RLSA-2026:33722
Rocky Linux:8containernetworking-plugins1:1.4.0-8.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:9containernetworking-plugins1:1.9.0-3.el9_8RLSA-2026:29703
Rocky Linux:8containers-common2:1-82.module+el8.10.0+1896+b18fa106RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+1880+8e896d1bRLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+40047+0c0a73f4RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+1872+2e18eb19RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+1874+ce489889RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+1843+6892ab28RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+1948+4b5cd4a9RLSA-2026:33722
Rocky Linux:8containers-common2:1-82.module+el8.10.0+2001+6a33db9fRLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+40047+0c0a73f4RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1843+6892ab28RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+2001+6a33db9fRLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1948+4b5cd4a9RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1825+623b0c20RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1815+5fe7415eRLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1874+ce489889RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1872+2e18eb19RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1896+b18fa106RLSA-2026:33722
Rocky Linux:8criu0:3.18-5.module+el8.10.0+1880+8e896d1bRLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+40133+32c21f88RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1843+6892ab28RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1815+5fe7415eRLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1825+623b0c20RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1872+2e18eb19RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+2001+6a33db9fRLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1948+4b5cd4a9RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1874+ce489889RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+40047+0c0a73f4RLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1880+8e896d1bRLSA-2026:33722
Rocky Linux:8crun0:1.14.3-2.module+el8.10.0+1896+b18fa106RLSA-2026:33722

Affected products (as reported)

VendorProductVersions
Go standard library crypto/x509 0 – before 1.25.91.26.0-0 – before 1.26.2

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References