Vulnerability-Lookup

CVE-2026-48050 (GCVE-0-2026-48050)

Vulnerability from cvelistv5 – Published: 2026-08-21 22:40 – Updated: 2026-08-25 16:44

Title

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

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.

Severity

8.8 (High)


                        
                          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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 16:44 UTC

CWE

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

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/Basekick-Labs/arc/security/adv…	x_refsource_CONFIRM
https://github.com/Basekick-Labs/arc/commit/32a40…	x_refsource_MISC
https://github.com/Basekick-Labs/arc/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
Basekick-Labs	arc	Affected: < 26.06.1	guessed

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-48050",
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      "title": "Arc: Unauthenticated access to Go debug pprof endpoints leaks runtime state and enables CPU-burn DoS"
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      "source": "Red Hat CSAF VEX",
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FKIE_CVE-2026-48050

Vulnerability from fkie_nvd - Published: 2026-08-21 23:16 - Updated: 2026-09-09 21:06

Severity

8.8 (High) - 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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8
	security-advisories@github.com	https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1
	security-advisories@github.com	https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "affected": [
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      "affectedData": [
        {
          "product": "arc",
          "vendor": "Basekick-Labs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.06.1"
            }
          ]
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      ],
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    }
  ],
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  "descriptions": [
    {
      "lang": "en",
      "value": "Arc is an open, SQL-native time-series database for telemetry. Versions prior to 26.06.1 register Go\u0027s `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\u0027s 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."
    }
  ],
  "id": "CVE-2026-48050",
  "lastModified": "2026-09-09T21:06:39.057",
  "metrics": {
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          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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          "version": "4.0",
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    "ssvcV203": [
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  "references": [
    {
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      "url": "https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8"
    },
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    }
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        },
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}

GHSA-J93G-RP6M-J32M

Vulnerability from github – Published: 2026-06-11 17:10 – Updated: 2026-06-11 17:10

Summary

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

Details

Summary

Arc registers 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.

Impact

Any network-reachable caller (no token required) can:

Fetch /debug/pprof/heap — leaks in-memory state: live SQL strings, decoded msgpack records, decompressed request bodies, cached *TokenInfo (the auth cache keys on SHA-256 of the plaintext token at auth.go:543).
Fetch /debug/pprof/goroutine?debug=2 — leaks call stacks, identifying internal code paths.
Fetch /debug/pprof/profile?seconds=N — pins a CPU core for arbitrary duration. Trivial DoS amplification (one short HTTP request → minutes of server CPU).
Fetch /debug/pprof/trace — long-duration execution trace, similar DoS profile.

No authentication, no rate limiting, no resource bound on the seconds parameter.

Patches

https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1

Planned mitigation:

Gate pprof registration behind an env var (ARC_DEBUG_PPROF=1) that defaults to off.
When enabled, bind pprof to a separate localhost-only listener (127.0.0.1:6060 via dedicated net/http server) so it's never reachable from the public API port.
Remove /debug/pprof from PublicPrefixes.
Fix the HasPrefix bug where "/debug/pprofX" matches "/debug/pprof".

Workarounds

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.
Patch the running build: comment out app.Use(pprof.New()) in internal/api/server.go and rebuild.

Credits

Reported by Alex Manson (@NeuroWinter, https://neurowinter.com/) on 2026-05-19.

Severity

8.8 (High)


                  
                    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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/basekick-labs/arc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260520170331-32a4091fb949"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-48050"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-306",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-11T17:10:21Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n\nArc registers Go\u0027s `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.\n\n### Impact\n\nAny network-reachable caller (no token required) can:\n\n- Fetch `/debug/pprof/heap` \u2014 leaks in-memory state: live SQL strings, decoded msgpack records, decompressed request bodies, cached `*TokenInfo` (the auth cache keys on SHA-256 of the plaintext token at `auth.go:543`).\n- Fetch `/debug/pprof/goroutine?debug=2` \u2014 leaks call stacks, identifying internal code paths.\n- Fetch `/debug/pprof/profile?seconds=N` \u2014 pins a CPU core for arbitrary duration. Trivial DoS amplification (one short HTTP request \u2192 minutes of server CPU).\n- Fetch `/debug/pprof/trace` \u2014 long-duration execution trace, similar DoS profile.\n\nNo authentication, no rate limiting, no resource bound on the `seconds` parameter.\n\n### Patches\n\nhttps://github.com/Basekick-Labs/arc/releases/tag/v26.06.1\n\nPlanned mitigation:\n\n1. Gate pprof registration behind an env var (`ARC_DEBUG_PPROF=1`) that defaults to off.\n2. When enabled, bind pprof to a separate localhost-only listener (`127.0.0.1:6060` via dedicated `net/http` server) so it\u0027s never reachable from the public API port.\n3. Remove `/debug/pprof` from `PublicPrefixes`.\n4. Fix the `HasPrefix` bug where `\"/debug/pprofX\"` matches `\"/debug/pprof\"`.\n\n### Workarounds\n\n- Block `/debug/pprof*` at a reverse proxy / load balancer in front of Arc.\n- Restrict Arc\u0027s API port to known-trusted networks via firewall rules.\n- Patch the running build: comment out `app.Use(pprof.New())` in `internal/api/server.go` and rebuild.\n\n### Credits\n\nReported by Alex Manson ([@NeuroWinter](https://github.com/NeuroWinter), https://neurowinter.com/) on 2026-05-19.",
  "id": "GHSA-j93g-rp6m-j32m",
  "modified": "2026-06-11T17:10:21Z",
  "published": "2026-06-11T17:10:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Basekick-Labs/arc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Arc: Unauthenticated access to Go debug pprof endpoints leaks runtime state and enables CPU-burn DoS"
}

RHSA-2026:68334

Vulnerability from csaf_redhat - Published: 2026-09-16 18:05 - Updated: 2026-09-17 07:38

Summary

Red Hat Security Advisory: Red Hat Edge Manager Version 1.1.4 Security Update

Severity

Important

Scope

23 vulnerabilities in this advisory, including CVE-2026-48050.

CVE-2026-48050

A flaw was found in Arc. This vulnerability allows a remote unauthenticated attacker to access Go debug pprof endpoints due to improper authentication bypass. Successful exploitation can lead to the disclosure of sensitive runtime state information and enable a CPU-burn Denial of Service (DoS) attack, impacting the availability and confidentiality of the system.

8.2 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Fixed: 18 products Known not affected: 18 products

https://access.redhat.com/errata/RHSA-2026:68334

Open the full advisory

RHSA-2026:68335

Vulnerability from csaf_redhat - Published: 2026-09-16 18:05 - Updated: 2026-09-17 07:38

Summary

Red Hat Security Advisory: Red Hat Edge Manager Version 1.2.1 Security Update

Severity

Important

Scope

12 vulnerabilities in this advisory, including CVE-2026-48050.

CVE-2026-48050

8.2 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Fixed: 18 products Known not affected: 18 products

https://access.redhat.com/errata/RHSA-2026:68335

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-48050 (GCVE-0-2026-48050)

FKIE_CVE-2026-48050

GHSA-J93G-RP6M-J32M

Summary

Impact

Patches

Workarounds

Credits

RHSA-2026:68334

RHSA-2026:68335

Tags

Sightings

Nomenclature

Related by attack behaviour