CVE-2026-49835

Description

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 Metrics

• v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.45%• Percentile: 38%

Techniques & Countermeasures

• CWE-770•Allocation of Resources Without Limits or Throttling

  The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

• chainguard•aactl

  < 0.4.12-r59

• chainguard•chainctl

  < 0.2.300-r2

• chainguard•chainctl-fips

  < 0.2.300-r2

• chainguard•cloudbeat-8.17

  all

• chainguard•cloudbeat-9.0

  all

• chainguard•cloudbeat-9.1

  all

• chainguard•cloudbeat-9.2

  < 9.2.8-r20

• chainguard•cloudbeat-fips-8.17

  all

• chainguard•cloudbeat-fips-9.0

  all

• chainguard•cloudbeat-fips-9.1

  all

• chainguard•cloudbeat-fips-9.2

  all

• chainguard•commercial-chainloop-backend

  all

• chainguard•commercial-chainloop-cli

  all

• chainguard•commercial-kyverno-1.13

  all

• chainguard•commercial-kyverno-1.14

  all

• chainguard•commercial-kyverno-1.15

  all

• chainguard•commercial-kyverno-1.16

  all

• chainguard•commercial-kyverno-1.17

  all

• chainguard•commercial-kyverno-background-controller-1.13

  all

• chainguard•commercial-kyverno-background-controller-1.14

  all

• chainguard•commercial-kyverno-background-controller-1.15

  all

• chainguard•commercial-kyverno-background-controller-1.16

  all

• chainguard•commercial-kyverno-background-controller-1.17

  all

• chainguard•commercial-kyverno-cleanup-controller-1.13

  all

• chainguard•commercial-kyverno-cleanup-controller-1.14

  all

• chainguard•commercial-kyverno-cleanup-controller-1.15

  all

• chainguard•commercial-kyverno-cleanup-controller-1.16

  all

• chainguard•commercial-kyverno-cleanup-controller-1.17

  all

• chainguard•commercial-kyverno-reports-controller-1.13

  all

• chainguard•commercial-kyverno-reports-controller-1.14

  all

• chainguard•commercial-kyverno-reports-controller-1.15

  all

• chainguard•commercial-kyverno-reports-controller-1.16

  all

• chainguard•commercial-kyverno-reports-controller-1.17

  all

• chainguard•commercial-kyvernopre-1.13

  all

• chainguard•commercial-kyvernopre-1.14

  all

• chainguard•commercial-kyvernopre-1.15

  all

• chainguard•commercial-kyvernopre-1.16

  all

• chainguard•commercial-kyvernopre-1.17

  all

• chainguard•crossplane-1.20

  < 1.20.10-r3

• chainguard•crossplane-2.0

  < 2.0.8-r10

• chainguard•crossplane-2.1

  < 2.1.7-r4

• chainguard•crossplane-2.2

  < 2.2.3-r5

• chainguard•crossplane-2.2-crank

  < 2.2.3-r5

• chainguard•crossplane-2.3

  < 2.3.3-r3

• chainguard•crossplane-2.3-crank

  < 2.3.3-r35

• chainguard•crossplane-fips-1.20

  < 1.20.10-r4

• chainguard•crossplane-fips-2.0

  < 2.0.8-r11

• chainguard•crossplane-fips-2.1

  < 2.1.7-r4

• chainguard•crossplane-fips-2.2

  < 2.2.3-r5

• chainguard•crossplane-fips-2.2-crank

  < 2.2.3-r5

Showing first 50 affected entries in server-rendered view.

References (9)

• https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-9c54-x2g4-v92j
• https://github.com/sigstore/timestamp-authority
• https://github.com/sigstore/timestamp-authority/commit/506ec57b6ac2ea1e4739322e47453469425b69b5
• https://github.com/sigstore/timestamp-authority/releases/tag/v2.1.0
• https://ubuntu.com/security/CVE-2026-49835
• https://www.cve.org/CVERecord?id=CVE-2026-49835
• https://security-tracker.debian.org/tracker/CVE-2026-49835
• https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49835.json
• https://nvd.nist.gov/vuln/detail/CVE-2026-49835