CVE-2026-100413: high-severity vulnerability in seaweedfs
SeaweedFS: Hard-coded SSH host key can be presented by certain standalone SFTP Helm deployments
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7epss 0.4%
exploitation probability
0.4%top 63% of all CVEs
observed exploitation
nono source reports it
SeaweedFS is a distributed storage system for files and blobs. From 4.0.388 until 4.41, the SFTP Helm chart embedded one unencrypted Ed25519 private host key in k8s/charts/seaweedfs/templates/sftp/sftp-secret.yaml as stringData.seaweedfs_sftp_ssh_private_key. A standalone deployment presented that public key when sftp.enabled and sftp.enableAuth were true, sftp.existingConfigSecret was not supplied, the legacy sftp.sshPrivateKey path remained selected, a valid config-ssh Secret allowed startup, and hostKeysFolder did not provide a later Ed25519 signer. An attacker able to redirect or intercept client traffic could impersonate that SFTP endpoint to clients that trusted the published host identity, exposing password credentials or data sent to the rogue endpoint. Default all-in-one and non-authenticated standalone paths did not load the key. This issue is fixed in version 4.41.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
Affected products
seaweedfs · seaweedfsRelated CVEs — seaweedfs
In the same product, most dangerous first.
CVE-2026-54917HIGHSeaweedFS: Path traversal in the S3 and Iceberg REST gateways allows cross-bucket accessEPSS 1.6%CVE-2026-58372HIGHSeaweedFS < 4.34 - Cross-Bucket Object Deletion via DeleteObjects Request-Body KeysEPSS 0.9%CVE-2026-72920CRITICALSeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative controlEPSS 0.8%CVE-2026-55874HIGHSeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object readEPSS 0.6%CVE-2026-73080CRITICALSeaweedFS: Unauthenticated SSRF with response read-back via VolumeServer.FetchAndWriteNeedleEPSS 0.5%CVE-2026-72921HIGHSeaweedFS: Filer JWT allowed_prefixes literal prefix match allows cross-tenant access to sibling pathsEPSS 0.4%