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TI-2026-35492 Aliases CVE-2026-48050GHSA-j93g-rp6m-j32m

Arc: Unauthenticated access to Go debug pprof endpoints leaks runtime state and enables CPU-burn DoS

Priority MEDIUM 46CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure, Security bypass, Denial of service
Confidentiality · integrity · availability
Low · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200, CWE-306 and CWE-400.

Summary

Arc is an open, SQL-native time-series database for telemetry. Versions prior to 26.06.1 register Go's `net/http/pprof` handlers at `/debug/pprof/*` via `app.Use(pprof.New())` in `internal/api/server.go`, and `/debug/pprof` is added to `PublicPrefixes` in `cmd/arc/main.go`. The auth middleware short-circuits before the token check on prefix match, so the endpoints are reachable without any authentication. Version 26.06.1 contains a patch. Some workarounds are available. Block `/debug/pprof*` at a reverse proxy / load balancer in front of Arc, restrict Arc's API port to known-trusted networks via firewall rules, and/or patch the running build: comment out `app.Use(pprof.New())` in `internal/api/server.go` and rebuild.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00887 59th percentileScored 2026-11-07
Fix Fixed arc (Basekick-Labs): 26.06.1github.com/basekick-labs/arc (Go): 0.0.0-20260520170331-32a4091fb949Red Hat: 6 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Basekick-Labsarcbefore 26.06.126.06.1Patch availableCNA
—github.com/basekick-labs/arc (Go)before 0.0.0-20260520170331-32a4091fb9490.0.0-20260520170331-32a4091fb949Patch availableGHSA-j93g-rp6m-j32m
  • arc VendorBasekick-Labs Affected before 26.06.1 Fixed in 26.06.1 Patch available CNA
  • github.com/basekick-labs/arc (Go) Vendor— Affected before 0.0.0-20260520170331-32a4091fb949 Fixed in 0.0.0-20260520170331-32a4091fb949 Patch available GHSA-j93g-rp6m-j32m

Remediation

  • Fix · CNA arc (Basekick-Labs) Fixed in 26.06.1
  • Fix · GHSA-j93g-rp6m-j32m github.com/basekick-labs/arc (Go) Fixed in 0.0.0-20260520170331-32a4091fb949 Advisory →

Red Hat 6 advisories

  • RHSA-2026:68334 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • RHEM 1.1 for RHEL 10 flightctl-1.1.4-1.el10em, flightctl-agent-1.1.4-1.el10em, flightctl-cli-1.1.4-1.el10em
    • RHEM 1.1 for RHEL 9 flightctl-1.1.4-1.el9em, flightctl-agent-1.1.4-1.el9em, flightctl-cli-1.1.4-1.el9em
  • RHSA-2026:68335 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.2.1 Security Update
    • RHEM 1.2 for RHEL 10 flightctl-1.2.1-1.el10, flightctl-agent-1.2.1-1.el10, flightctl-cli-1.2.1-1.el10
    • RHEM 1.2 for RHEL 9 flightctl-1.2.1-1.el9, flightctl-agent-1.2.1-1.el9, flightctl-cli-1.2.1-1.el9
  • RHSA-2026:68254 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.2.1 Security Update
    • Red Hat Edge Manager 1.2 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +11
Show 3 more Red Hat advisories
  • RHSA-2026:68253 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • Red Hat Edge Manager 1.1 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +10
  • RHSA-2026:68044 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • Red Hat Edge Manager 1.1 registry.redhat.io/rhem/flightctl-alert-exporter-rhel10, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel10, registry.redhat.io/rhem/flightctl-api-rhel10 +11
  • RHSA-2026:68006 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.2.1 Security Update
    • Red Hat Edge Manager 1.2 registry.redhat.io/rhem/flightctl-alert-exporter-rhel10, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel10, registry.redhat.io/rhem/flightctl-api-rhel10 +11

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48050
  2. 2026-10-03 Alias added: GHSA-j93g-rp6m-j32m
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

References

Other 4

  • TI-2026-40199 Arc: Unauthenticated cluster node admission when `cluster.shared_secret` is unset CVSS 4.0MEDIUM 6.9
  • TI-2026-83373 Cross-database authorization bypass in Arc via DuckDB I/O functions CVSS 3.1MEDIUM 6.5
  • TI-2026-35546 Missing authentication in Basekick-Labs arc CVSS 4.0HIGH 8.3
  • TI-2026-35545 Path traversal in Basekick-Labs arc CVSS 4.0HIGH 8.3
  • TI-2026-35236 Arc has an authenticated arbitrary local-file read via DuckDB I/O functions that bypasses RBAC table-level checks CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences