Vulnerability-Lookup

CVE-2026-67198 (GCVE-0-2026-67198)

Vulnerability from cvelistv5 – Published: 2026-08-04 14:04 – Updated: 2026-08-04 15:46 X_Open Source

Title

Perspective 5.0.0 DoS via VirtualServer Protocol Dispatcher

Summary

Perspective 5.0.0 contains a denial-of-service vulnerability in the VirtualServer protocol dispatcher that allows unauthenticated remote attackers to crash the server process by sending malformed or incomplete protobuf messages. Attackers can send well-formed requests such as ViewToArrowReq with no viewport set or MakeTableReq with no data field to trigger unwrap() calls on None values at nine distinct sites, causing the process to abort with SIGABRT.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-616 - Incomplete Identification of Uploaded File Variables (PHP)

Assigner

VulnCheck

References

2 references

URL	Tags
https://christbowel.com/blog/perspective-5-0-0-fi…	technical-descriptionexploit
https://www.vulncheck.com/advisories/perspective-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
perspective-dev	perspective	Affected: 0 , ≤ 5.0.0 (semver)

Date Public

2026-08-03 00:00

Credits

Christ Bowel Bouchuen

Show details on NVD website

JSON

To clipboard

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GHSA-PR84-483F-RMG2

Vulnerability from github – Published: 2026-08-04 15:32 – Updated: 2026-08-04 15:32

Details

Severity

7.5 (High)


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

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-67198"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-616"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-04T15:16:40Z",
    "severity": "HIGH"
  },
  "details": "Perspective 5.0.0 contains a denial-of-service vulnerability in the VirtualServer protocol dispatcher that allows unauthenticated remote attackers to crash the server process by sending malformed or incomplete protobuf messages. Attackers can send well-formed requests such as ViewToArrowReq with no viewport set or MakeTableReq with no data field to trigger unwrap() calls on None values at nine distinct sites, causing the process to abort with SIGABRT.",
  "id": "GHSA-pr84-483f-rmg2",
  "modified": "2026-08-04T15:32:23Z",
  "published": "2026-08-04T15:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67198"
    },
    {
      "type": "WEB",
      "url": "https://christbowel.com/blog/perspective-5-0-0-five-cves"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/perspective-dos-via-virtualserver-protocol-dispatcher"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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",
      "type": "CVSS_V4"
    }
  ]
}

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.

Action not permitted

CVE-2026-67198 (GCVE-0-2026-67198)

GHSA-PR84-483F-RMG2

Tags

Sightings

Nomenclature