CVE-2026-42504
Public on 2026-06-02
Modified on 2026-09-12
Description
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | amazon-cloudwatch-agent | 2026-08-04 | ALAS2-2026-3844 | Fixed |
| Amazon Linux 2023 | amazon-cloudwatch-agent | 2026-08-04 | ALAS2023-2026-2025 | Fixed |
| Amazon Linux 2027 Preview | amazon-cloudwatch-agent | Not Affected | ||
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | amazon-ecr-credential-helper | No Fix Planned | ||
| Amazon Linux 2 - Docker Extra | amazon-ecr-credential-helper | No Fix Planned | ||
| Amazon Linux 2 - Ecs Extra | amazon-ecr-credential-helper | No Fix Planned | ||
| Amazon Linux 2023 | amazon-ecr-credential-helper | No Fix Planned | ||
| Amazon Linux 2027 Preview | amazon-ecr-credential-helper | Not Affected | ||
| Amazon Linux 2 - Core | amazon-ssm-agent | Not Affected | ||
| Amazon Linux 2023 | amazon-ssm-agent | Not Affected | ||
| Amazon Linux 2027 Preview | amazon-ssm-agent | Not Affected | ||
| Amazon Linux 2 - Core | cni-plugins | No Fix Planned | ||
| Amazon Linux 2023 | cni-plugins | No Fix Planned | ||
| Amazon Linux 2027 Preview | cni-plugins | Not Affected | ||
| Amazon Linux 2 - Docker Extra | containerd | 2026-07-08 | ALAS2DOCKER-2026-135 | Fixed |
| Amazon Linux 2 - Ecs Extra | containerd | 2026-07-08 | ALAS2ECS-2026-130 | Fixed |
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | containerd | 2026-07-08 | ALAS2NITRO-ENCLAVES-2026-114 | Fixed |
| Amazon Linux 2023 | containerd | 2026-07-07 | ALAS2023-2026-1909 | Fixed |
| Amazon Linux 2027 Preview | containerd | Not Affected | ||
| Amazon Linux 2023 | credentials-fetcher | 2026-06-22 | ALAS2023-2026-1885 | Fixed |
| Amazon Linux 2027 Preview | credentials-fetcher | Not Affected | ||
| Amazon Linux 2 - Core | cri-tools | No Fix Planned | ||
| Amazon Linux 2 - Docker Extra | docker | 2026-07-08 | ALAS2DOCKER-2026-134 | Fixed |
| Amazon Linux 2 - Ecs Extra | docker | 2026-07-08 | ALAS2ECS-2026-131 | Fixed |
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | docker | 2026-07-08 | ALAS2NITRO-ENCLAVES-2026-112 | Fixed |
| Amazon Linux 2023 | docker | 2026-07-07 | ALAS2023-2026-1901 | Fixed |
| Amazon Linux 2027 Preview | docker | Not Affected | ||
| Amazon Linux 2 - Ecs Extra | ecs-init | 2026-07-08 | ALAS2ECS-2026-127 | Fixed |
| Amazon Linux 2023 | ecs-init | 2026-07-07 | ALAS2023-2026-1902 | Fixed |
| Amazon Linux 2027 Preview | ecs-init | Not Affected | ||
| Amazon Linux 2023 | git-lfs | No Fix Planned | ||
| Amazon Linux 2027 Preview | git-lfs | Not Affected | ||
| Amazon Linux 2 - Golang1.11 Extra | golang | No Fix Planned | ||
| Amazon Linux 2 - Golang1.19 Extra | golang | No Fix Planned | ||
| Amazon Linux 2 - Golang1.9 Extra | golang | No Fix Planned | ||
| Amazon Linux 2 - Core | golang | 2026-06-22 | ALAS2-2026-3383 | Fixed |
| Amazon Linux 2023 | golang | 2026-06-22 | ALAS2023-2026-1878 | Fixed |
| Amazon Linux 2027 Preview | golang | Not Affected | ||
| Amazon Linux 2023 | golang-github-burntsushi-toml | 2026-06-22 | ALAS2023-2026-1877 | Fixed |
| Amazon Linux 2027 Preview | golang-github-burntsushi-toml | Not Affected | ||
| Amazon Linux 2023 | golang-github-burntsushi-toml-test | 2026-06-22 | ALAS2023-2026-1876 | Fixed |
| Amazon Linux 2027 Preview | golang-github-burntsushi-toml-test | Not Affected | ||
| Amazon Linux 2023 | golang-github-cpuguy83-md2man | 2026-06-22 | ALAS2023-2026-1875 | Fixed |
| Amazon Linux 2027 Preview | golang-github-cpuguy83-md2man | Not Affected | ||
| Amazon Linux 2 - Core | golist | 2026-06-22 | ALAS2-2026-3382 | Fixed |
| Amazon Linux 2023 | golist | 2026-06-22 | ALAS2023-2026-1874 | Fixed |
| Amazon Linux 2027 Preview | golist | Not Affected | ||
| Amazon Linux 2023 | libcap | No Fix Planned | ||
| Amazon Linux 2027 Preview | libcap | Not Affected | ||
| Amazon Linux 2 - Core | nerdctl | 2026-07-08 | ALAS2-2026-3497 | Fixed |
| Amazon Linux 2023 | nerdctl | 2026-07-07 | ALAS2023-2026-1908 | Fixed |
| Amazon Linux 2027 Preview | nerdctl | Not Affected | ||
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | oci-add-hooks | No Fix Planned | ||
| Amazon Linux 2 - Docker Extra | oci-add-hooks | No Fix Planned | ||
| Amazon Linux 2 - Ecs Extra | oci-add-hooks | No Fix Planned | ||
| Amazon Linux 2023 | oci-add-hooks | No Fix Planned | ||
| Amazon Linux 2027 Preview | oci-add-hooks | Not Affected | ||
| Amazon Linux 2 - Core | rclone | No Fix Planned | ||
| Amazon Linux 2023 | rclone | No Fix Planned | ||
| Amazon Linux 2027 Preview | rclone | Not Affected | ||
| Amazon Linux 2 - Ecs Extra | runc | No Fix Planned | ||
| Amazon Linux 2 - Docker Extra | runc | 2026-09-14 | ALAS2DOCKER-2026-141 | Fixed |
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | runc | 2026-09-14 | ALAS2NITRO-ENCLAVES-2026-119 | Fixed |
| Amazon Linux 2023 | runc | 2026-09-14 | ALAS2023-2026-2138 | Fixed |
| Amazon Linux 2027 Preview | runc | Not Affected | ||
| Amazon Linux 2 - Docker Extra | runfinch-finch | 2026-06-22 | ALAS2DOCKER-2026-132 | Fixed |
| Amazon Linux 2023 | runfinch-finch | 2026-06-22 | ALAS2023-2026-1886 | Fixed |
| Amazon Linux 2027 Preview | runfinch-finch | Not Affected | ||
| Amazon Linux 2 - Docker Extra | soci-snapshotter | 2026-06-22 | ALAS2DOCKER-2026-131 | Fixed |
| Amazon Linux 2023 | soci-snapshotter | 2026-06-22 | ALAS2023-2026-1884 | Fixed |
| Amazon Linux 2027 Preview | soci-snapshotter | Not Affected | ||
| Amazon Linux 2023 | yq | No Fix Planned | ||
| Amazon Linux 2027 Preview | yq | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |