OpenBao before 2.6.3 Sensitive Data Leak in Audit Log via Malformed Parameters

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

OpenBao before 2.6.3 contains an information disclosure vulnerability that allows attackers to leak sensitive data into audit logs by sending malformed plugin parameters. Attackers can submit requests with malformed TypeKVPair or TypeHeader field values, causing error messages containing sensitive input to be recorded in audit logs.

Source published

22 Oct 2026 19:13:34 UTC

Source modified

29 Oct 2026 02:26:32 UTC

Observed here

29 Oct 2026 03:48:01 UTC

Source terms

CVE Program Terms of Use

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CVSS 4.0 · 2.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1 · 2.0 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N