Vulnerability-Lookup

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

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

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 CNA under the mitre root

CNA scorecard E 42/100 over 183 records in the last 180 days details

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	CPE status
Functional Software, Inc.	Sentry Seer	Affected: Web site	guessed

Show details on NVD website

JSON

To clipboard

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          }
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}

FKIE_CVE-2026-90999

Vulnerability from fkie_nvd - Published: 2026-09-16 16:17 - Updated: 2026-09-18 17:49

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	cret@cert.org	https://kb.cert.org/vuls/id/212479
	af854a3a-2127-422b-91ae-364da2661108	https://www.kb.cert.org/vuls/id/212479

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Sentry Seer",
          "vendor": "Functional Software, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Web site"
            }
          ]
        }
      ],
      "source": "cret@cert.org"
    }
  ],
  "cveTags": [],
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    {
      "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."
    }
  ],
  "id": "CVE-2026-90999",
  "lastModified": "2026-09-18T17:49:08.457",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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  },
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    {
      "source": "cret@cert.org",
      "url": "https://kb.cert.org/vuls/id/212479"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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  ],
  "sourceIdentifier": "cret@cert.org",
  "vulnStatus": "Deferred",
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          "value": "CWE-20"
        },
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        },
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          "lang": "en",
          "value": "CWE-94"
        },
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          "value": "CWE-116"
        },
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          "lang": "en",
          "value": "CWE-913"
        }
      ],
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}

GHSA-VH55-Q5M4-8WR6

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

Details

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "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"
    }
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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

FKIE_CVE-2026-90999

GHSA-VH55-Q5M4-8WR6

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Related by attack behaviour