Vulnerability-Lookup

GHSA-VH55-Q5M4-8WR6

Vulnerability from github – Published: 2026-09-16 18:32 – Updated: 2026-09-18 15:31

Details

Sentry Seer is vulnerable to a multi-stage trust-boundary violation that allows unauthenticated attacker-controlled telemetry to become code that is executed by an agent in a privileged automation environment. An external attacker can submit fabricated Sentry events without having access to the victim’s Sentry account, source repository, or infrastructure.

Severity

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90999"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T16:17:21Z",
    "severity": "CRITICAL"
  },
  "details": "Sentry Seer is vulnerable to a multi-stage trust-boundary violation that allows unauthenticated attacker-controlled telemetry to become code that is executed by an agent in a privileged automation environment. An external attacker can submit fabricated Sentry events without having access to the victim\u2019s Sentry account, source repository, or infrastructure.",
  "id": "GHSA-vh55-q5m4-8wr6",
  "modified": "2026-09-18T15:31:52Z",
  "published": "2026-09-16T18:32:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90999"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/212479"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/212479"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-90999 (GCVE-0-2026-90999)

Vulnerability from cvelistv5 – Published: 2026-09-16 15:45 – Updated: 2026-09-18 13:40

Title

Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment

Summary

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-18 13:40 UTC

CWE

CWE-20 Improper Input Validation
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-116 Improper Encoding or Escaping of Output
CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-913 Improper Control of Dynamically-Managed Code Resources
CWE-20 - Improper Input Validation
CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-116 - Improper Encoding or Escaping of Output
CWE-94 - Improper Control of Generation of Code ('Code Injection')
CWE-913 - Improper Control of Dynamically-Managed Code Resources

Assigner

certcc mitre root

References

2 references

URL	Tags
https://kb.cert.org/vuls/id/212479
https://www.kb.cert.org/vuls/id/212479

Impacted products

1 product

Vendor	Product	Version
Functional Software, Inc.	Sentry Seer	Affected: Web site

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-09-16T16:08:56.590Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/212479"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-90999",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-18T13:40:06.015791Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-20",
                "description": "CWE-20 Improper Input Validation",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-74",
                "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-116",
                "description": "CWE-116 Improper Encoding or Escaping of Output",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-94",
                "description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-913",
                "description": "CWE-913 Improper Control of Dynamically-Managed Code Resources",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-18T13:40:22.164Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Sentry Seer",
          "vendor": "Functional Software, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Web site"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Sentry Seer is vulnerable to a multi-stage trust-boundary violation that allows unauthenticated attacker-controlled telemetry to become code that is executed by an agent in a privileged automation environment. An external attacker can submit fabricated Sentry events without having access to the victim\u2019s Sentry account, source repository, or infrastructure."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-20 Improper Input Validation",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-116 Improper Encoding or Escaping of Output",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-913 Improper Control of Dynamically-Managed Code Resources",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T15:45:47.463Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/212479"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment",
      "x_generator": {
        "engine": "VINCE 3.0.48",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-90999"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-90999",
    "datePublished": "2026-09-16T15:45:47.463Z",
    "dateReserved": "2026-09-14T15:22:28.291Z",
    "dateUpdated": "2026-09-18T13:40:22.164Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.