Vulnerability-Lookup

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

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

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

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

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "arc",
          "vendor": "Basekick-Labs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.06.1"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306: Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-21T22:40:12.771Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m"
        },
        {
          "name": "https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8"
        },
        {
          "name": "https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1"
        }
      ],
      "source": {
        "advisory": "GHSA-j93g-rp6m-j32m",
        "discovery": "UNKNOWN"
      },
      "title": "Arc: Unauthenticated access to Go debug pprof endpoints leaks runtime state and enables CPU-burn DoS"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-48050",
    "datePublished": "2026-08-21T22:40:12.771Z",
    "dateReserved": "2026-05-20T18:15:53.578Z",
    "dateUpdated": "2026-08-21T22:40:12.771Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-48050",
      "date": "2026-08-22",
      "epss": "0.00358",
      "percentile": "0.29151"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-48050\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-21T23:16:25.070\",\"lastModified\":\"2026-08-21T23:16:25.070\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"Basekick-Labs\",\"product\":\"arc\",\"versions\":[{\"version\":\"\u003c 26.06.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"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\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"},{\"lang\":\"en\",\"value\":\"CWE-306\"},{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"references\":[{\"url\":\"https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}

FKIE_CVE-2026-48050

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

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

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "arc",
          "vendor": "Basekick-Labs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.06.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "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": "2026-08-21T23:16:25.070",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "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",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-21T23:16:25.070",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

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

Show details on source website

JSON

To clipboard

{
  "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"
}

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.

Action not permitted

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

FKIE_CVE-2026-48050

GHSA-J93G-RP6M-J32M

Summary

Impact

Patches

Workarounds

Credits

Tags

Sightings

Nomenclature