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CVE Vulnerability Details :
CVE-2026-49835
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-17 Jul, 2026 | 18:16
Updated At-17 Jul, 2026 | 18:16
Rejected At-
▼CVE Numbering Authority (CNA)
Sigstore Timestamp Authority: OOM due to unbounded metric label cardinality

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.

Affected Products
Vendor
sigstore
Product
timestamp-authority
Versions
Affected
  • < 2.1.0
Problem Types
TypeCWE IDDescription
CWECWE-770CWE-770: Allocation of Resources Without Limits or Throttling
Type: CWE
CWE ID: CWE-770
Description: CWE-770: Allocation of Resources Without Limits or Throttling
Metrics
VersionBase scoreBase severityVector
3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-9c54-x2g4-v92j
x_refsource_CONFIRM
https://github.com/sigstore/timestamp-authority/commit/506ec57b6ac2ea1e4739322e47453469425b69b5
x_refsource_MISC
https://github.com/sigstore/timestamp-authority/releases/tag/v2.1.0
x_refsource_MISC
Hyperlink: https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-9c54-x2g4-v92j
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/sigstore/timestamp-authority/commit/506ec57b6ac2ea1e4739322e47453469425b69b5
Resource:
x_refsource_MISC
Hyperlink: https://github.com/sigstore/timestamp-authority/releases/tag/v2.1.0
Resource:
x_refsource_MISC
Details not found