Vulnerability-Lookup

CVE-2026-90786 (GCVE-0-2026-90786)

Vulnerability from cvelistv5 – Published: 2026-09-14 13:30 – Updated: 2026-09-15 15:43 X_Open Source

Title

Dvidelabs flatcc Duplicate Symbol semantics.c align_order_members assertion

Summary

A vulnerability was determined in Dvidelabs flatcc up to 0.6.3. This impacts the function align_order_members of the file src/compiler/semantics.c of the component Duplicate Symbol Handler. This manipulation causes reachable assertion. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 8b19ba4e992ebcad7f5970704d1afc5507fa5205. To fix this issue, it is recommended to deploy a patch.

Severity

6.9 (Medium)


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

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 15:43 UTC

CWE

CWE-617 - Reachable Assertion

Assigner

VulDB mitre root

References

7 references

URL	Tags
https://vuldb.com/vuln/403292	vdb-entrytechnical-description
https://vuldb.com/vuln/403292/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90786	third-party-advisory
https://vuldb.com/submit/919201	third-party-advisory
https://github.com/dvidelabs/flatcc/issues/387	exploitissue-tracking
https://github.com/jimjag/flatcc/commit/8b19ba4e9…	patch
https://github.com/dvidelabs/flatcc/	product

Impacted products

1 product

Vendor	Product	Version	CPE status
Dvidelabs	flatcc	Affected: 0.6.0 Affected: 0.6.1 Affected: 0.6.2 Affected: 0.6.3 cpe:2.3:a:dvidelabs:flatcc::::::::

Credits

lrrh (VulDB User)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-90786

Vulnerability from fkie_nvd - Published: 2026-09-14 14:17 - Updated: 2026-09-15 16:17

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/dvidelabs/flatcc/
	cna@vuldb.com	https://github.com/dvidelabs/flatcc/issues/387
	cna@vuldb.com	https://github.com/jimjag/flatcc/commit/8b19ba4e992ebcad7f5970704d1afc5507fa5205
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-90786
	cna@vuldb.com	https://vuldb.com/submit/919201
	cna@vuldb.com	https://vuldb.com/vuln/403292
	cna@vuldb.com	https://vuldb.com/vuln/403292/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
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          "cpes": [
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    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "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:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-90786",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-15T15:43:42.783546Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-14T14:17:19.353",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/dvidelabs/flatcc/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/dvidelabs/flatcc/issues/387"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/jimjag/flatcc/commit/8b19ba4e992ebcad7f5970704d1afc5507fa5205"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-90786"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/919201"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/403292"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/403292/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-XQGM-RJ39-M8R4

Vulnerability from github – Published: 2026-09-14 15:32 – Updated: 2026-09-14 15:32

Details

Severity

5.3 (Medium)


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

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-90786"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-617"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-14T14:17:19Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability was determined in Dvidelabs flatcc up to 0.6.3. This impacts the function align_order_members of the file src/compiler/semantics.c of the component Duplicate Symbol Handler. This manipulation causes reachable assertion. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 8b19ba4e992ebcad7f5970704d1afc5507fa5205. To fix this issue, it is recommended to deploy a patch.",
  "id": "GHSA-xqgm-rj39-m8r4",
  "modified": "2026-09-14T15:32:47Z",
  "published": "2026-09-14T15:32:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90786"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dvidelabs/flatcc/issues/387"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jimjag/flatcc/commit/8b19ba4e992ebcad7f5970704d1afc5507fa5205"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dvidelabs/flatcc"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-90786"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/919201"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/403292"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/403292/cti"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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.
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.

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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-2026-90786 (GCVE-0-2026-90786)

FKIE_CVE-2026-90786

GHSA-XQGM-RJ39-M8R4

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