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Fencer Vulns
high 8.8

CVE-2026-48050 json

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

published 2026-06-11 4 mo ago modified 2026-10-12 27 d ago also GHSA-j93g-rp6m-j32m , GO-2026-5457 , EUVD-2026-64190

cvss
8.8
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

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.

Patch / fix

  • go github.com/basekick-labs/arc 0.0.0-20260520170331-32a4091fb949
  • flightctl edge manager 1.1 1.1.4-1.el10em
  • flightctl edge manager 1.1 1.1.4-1.el9em
  • flightctl-cli edge manager 1.1 1.1.4-1.el10em
  • flightctl-cli edge manager 1.1 1.1.4-1.el9em
  • flightctl-agent edge manager 1.1 1.1.4-1.el10em
  • flightctl-agent edge manager 1.1 1.1.4-1.el9em
  • flightctl edge manager 1.2 1.2.1-1.el10
  • flightctl edge manager 1.2 1.2.1-1.el9

red hat advisories RHSA-2026:68334RHSA-2026:68335

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
go github.com/basekick-labs/arc
<0.0.0-20260520170331-32a4091fb949
0.0.0-20260520170331-32a4091fb949

Affected products

  • Basekick-Labs arc

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-306 Missing Authentication for Critical Functionality
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.