cvedb.io
CVE-2025-66564
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2025-12-04T23:15:47.430 · Last modified 2026-06-17T09:57:02.323

Summary

Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.0.3, Function api.ParseJSONRequest currently splits (via a call to strings.Split) an optionally-provided OID (which is untrusted data) on periods. Similarly, function api.getContentType splits the Content-Type header (which is also untrusted data) on an application string. As a result, in the face of a malicious request with either an excessively long OID in the payload containing many period characters or a malformed Content-Type header, a call to api.ParseJSONRequest or api.getContentType incurs allocations of O(n) bytes (where n stands for the length of the function's argument). This vulnerability is fixed in 2.0.3.

Affected products

linuxfoundation — sigstore_timestamp_authority

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.