1sealsemantic last-mile verification

Research / Finding

HC Vault / OpenBao token exfiltration when decrypting untrusted SOPS-encrypted files

F-MOZILLA-SOPS-004

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

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Recorded evidence

—score not recorded
GHSA-jgf3-f6rg-8x3hGHSAgetsops/sops

HC Vault / OpenBao token exfiltration when decrypting untrusted SOPS-encrypted files

mitigation available; configuration required
details
Finding IDs
F-MOZILLA-SOPS-004
GHSA
GHSA-jgf3-f6rg-8x3h
Status
mitigation available; configuration required
Note
SOPS 3.13.0 adds SOPS_HC_VAULT_ALLOWLIST via PR #2164. Its default remains all, preserving unrestricted forwarding; set it to none or a restrictive list of trusted Vault/OpenBao endpoints to mitigate token exfiltration through untrusted encrypted-file metadata.
Upstream title
HC Vault / OpenBao token exfiltration when decrypting untrusted SOPS-encrypted files
Upstream CWE
CWE-522, CWE-918
Upstream publication
Upstream updated
Metadata fetched
Upstream @1seal credit
@1seal: reporter (accepted)

F-MOZILLA-SOPS-004: Outbound request trust. Untrusted Vault metadata chooses the destination receiving a local token. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-MOZILLA-SOPS-004

Security area (1seal assessment): Authorization. Untrusted Vault metadata chooses the destination receiving a local token. Reviewed 24 Sep 2026.

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