CVE-2026-49835Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps.
Updated under an hour ago ()
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It affects linuxfoundation sigstore_timestamp_authority. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.1.0, the global wrapMetrics middleware records raw HTTP request path r.URL.Path and raw HTTP request method r.Method as Prometheus labels for latency and request count metric vectors before routing, allowing an unauthenticated remote attacker to issue requests with random paths such as /api/v1/timestamp/<uuid> or random HTTP methods and create unbounded permanent time-series entries that exhaust memory. This issue is fixed in version 2.1.0.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linuxfoundation sigstore_timestamp_authority linuxfoundation:sigstore_timestamp_authority | before 2.1.0 | NVD |
References
- https://github.com/sigstore/timestamp-authority/commit/506ec57b6ac2ea1e4739322e47453469425b69b5patch
- https://github.com/sigstore/timestamp-authority/releases/tag/v2.1.0product, release-notes
- https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-9c54-x2g4-v92jmitigation, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.