Vulnerability-Lookup

CVE-2026-2887 (GCVE-0-2026-2887)

Vulnerability from cvelistv5 – Published: 2026-02-21 21:02 – Updated: 2026-02-23 19:30 X_Open Source

Title

aardappel lobster idents.h TypeName recursion

Summary

A security vulnerability has been detected in aardappel lobster up to 2025.4. This impacts the function lobster::TypeName in the library dev/src/lobster/idents.h. Such manipulation leads to uncontrolled recursion. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. Upgrading to version 2026.1 will fix this issue. The name of the patch is 8ba49f98ccfc9734ef352146806433a41d9f9aa6. It is advisable to upgrade the affected component.

Severity

4.8 (Medium)


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

3.3 (Low)


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

3.3 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-23 19:30 UTC

CWE

CWE-674 - Uncontrolled Recursion
CWE-404 - Denial of Service

Assigner

VulDB CNA under the mitre root

CNA scorecard B 82/100 over 3825 records in the last 180 days details

References

9 references

URL	Tags
https://vuldb.com/?id.347181	vdb-entrytechnical-description
https://vuldb.com/?ctiid.347181	signaturepermissions-required
https://vuldb.com/?submit.755026	third-party-advisory
https://github.com/aardappel/lobster/issues/397	issue-tracking
https://github.com/aardappel/lobster/issues/397#i…	issue-tracking
https://github.com/oneafter/0204/blob/main/lob3/r…	exploit
https://github.com/aardappel/lobster/commit/8ba49…	patch
https://github.com/aardappel/lobster/releases/tag…	patch
https://github.com/aardappel/lobster/	product

Impacted products

1 product

Vendor	Product	Version	CPE status
aardappel	lobster	Affected: 2025.0 Affected: 2025.1 Affected: 2025.2 Affected: 2025.3 Affected: 2025.4 Unaffected: 2026.1	guessed

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

To clipboard

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                "baseScore": 3.3,
                "baseSeverity": "LOW",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
                "version": "3.1"
              }
            },
            {
              "cvssV3_0": {
                "baseScore": 3.3,
                "baseSeverity": "LOW",
                "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
                "version": "3.0"
              }
            },
            {
              "cvssV2_0": {
                "baseScore": 1.7,
                "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
                "version": "2.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-674",
                  "description": "Uncontrolled Recursion",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-404",
                  "description": "Denial of Service",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-02-21T21:02:16.010Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-347181 | aardappel lobster idents.h TypeName recursion",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/?id.347181"
            },
            {
              "name": "VDB-347181 | CTI Indicators (IOB, IOC, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/?ctiid.347181"
            },
            {
              "name": "Submit #755026 | aardappel lobster c8a6042 Uncontrolled Recursion",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/?submit.755026"
            },
            {
              "tags": [
                "issue-tracking"
              ],
              "url": "https://github.com/aardappel/lobster/issues/397"
            },
            {
              "tags": [
                "issue-tracking"
              ],
              "url": "https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/oneafter/0204/blob/main/lob3/repro.lobster"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/aardappel/lobster/releases/tag/v2026.1"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://github.com/aardappel/lobster/"
            }
          ],
          "tags": [
            "x_open-source"
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-02-20T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2026-02-20T01:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2026-02-20T18:12:36.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "aardappel lobster idents.h TypeName recursion"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2026-2887",
        "datePublished": "2026-02-21T21:02:16.010Z",
        "dateReserved": "2026-02-20T17:07:30.695Z",
        "dateUpdated": "2026-02-23T19:30:34.090Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-2887

Vulnerability from fkie_nvd - Published: 2026-02-21 21:16 - Updated: 2026-06-17 10:31

Severity

3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
cna@vuldb.com	https://github.com/aardappel/lobster/	Product
cna@vuldb.com	https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6	Patch
cna@vuldb.com	https://github.com/aardappel/lobster/issues/397	Exploit, Issue Tracking, Vendor Advisory
cna@vuldb.com	https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088	Exploit, Issue Tracking, Vendor Advisory
cna@vuldb.com	https://github.com/aardappel/lobster/releases/tag/v2026.1	Release Notes
cna@vuldb.com	https://github.com/oneafter/0204/blob/main/lob3/repro.lobster	Third Party Advisory
cna@vuldb.com	https://vuldb.com/?ctiid.347181	Permissions Required, VDB Entry
cna@vuldb.com	https://vuldb.com/?id.347181	Third Party Advisory, VDB Entry
cna@vuldb.com	https://vuldb.com/?submit.755026	Third Party Advisory, VDB Entry

Impacted products

	Vendor	Product	Version
	strlen	lobster	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "lobster",
          "vendor": "aardappel",
          "versions": [
            {
              "status": "affected",
              "version": "2025.0"
            },
            {
              "status": "affected",
              "version": "2025.1"
            },
            {
              "status": "affected",
              "version": "2025.2"
            },
            {
              "status": "affected",
              "version": "2025.3"
            },
            {
              "status": "affected",
              "version": "2025.4"
            },
            {
              "status": "unaffected",
              "version": "2026.1"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:strlen:lobster:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C71AFEA1-9739-440F-BC6E-2C90F0A3988B",
              "versionEndExcluding": "2026.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security vulnerability has been detected in aardappel lobster up to 2025.4. This impacts the function lobster::TypeName in the library dev/src/lobster/idents.h. Such manipulation leads to uncontrolled recursion. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. Upgrading to version 2026.1 will fix this issue. The name of the patch is 8ba49f98ccfc9734ef352146806433a41d9f9aa6. It is advisable to upgrade the affected component."
    },
    {
      "lang": "es",
      "value": "Se ha detectado una vulnerabilidad de seguridad en aardappel lobster hasta 2025.4. Esta afecta a la funci\u00f3n lobster::TypeName de la biblioteca dev/src/lobster/idents.h. Su manipulaci\u00f3n conduce a recursi\u00f3n incontrolada. El ataque solo puede ser realizado desde un entorno local. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado. La actualizaci\u00f3n de la versi\u00f3n 2026.1 soluciona este problema. El nombre del parche es 8ba49f98ccfc9734ef352146806433a41d9f9aa6. Es aconsejable actualizar el componente afectado."
    }
  ],
  "id": "CVE-2026-2887",
  "lastModified": "2026-06-17T10:31:58.380",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 1.7,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.9,
          "baseSeverity": "LOW",
          "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": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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-2026-2887",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-23T19:30:16.551890Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-21T21:16:11.420",
  "references": [
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/aardappel/lobster/"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://github.com/aardappel/lobster/issues/397"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/aardappel/lobster/releases/tag/v2026.1"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/oneafter/0204/blob/main/lob3/repro.lobster"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Permissions Required",
        "VDB Entry"
      ],
      "url": "https://vuldb.com/?ctiid.347181"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://vuldb.com/?id.347181"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://vuldb.com/?submit.755026"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-404"
        },
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-V43P-PV9W-GQMF

Vulnerability from github – Published: 2026-02-21 21:30 – Updated: 2026-02-21 21:30

Details

Severity

3.3 (Low)


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

1.9 (Low)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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-2026-2887"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-404",
      "CWE-674"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-21T21:16:11Z",
    "severity": "MODERATE"
  },
  "details": "A security vulnerability has been detected in aardappel lobster up to 2025.4. This impacts the function lobster::TypeName in the library dev/src/lobster/idents.h. Such manipulation leads to uncontrolled recursion. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. Upgrading to version 2026.1 will fix this issue. The name of the patch is 8ba49f98ccfc9734ef352146806433a41d9f9aa6. It is advisable to upgrade the affected component.",
  "id": "GHSA-v43p-pv9w-gqmf",
  "modified": "2026-02-21T21:30:27Z",
  "published": "2026-02-21T21:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2887"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aardappel/lobster/issues/397"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aardappel/lobster/issues/397#issuecomment-3849015088"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aardappel/lobster/commit/8ba49f98ccfc9734ef352146806433a41d9f9aa6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aardappel/lobster"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aardappel/lobster/releases/tag/v2026.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oneafter/0204/blob/main/lob3/repro.lobster"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.347181"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.347181"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.755026"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

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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-2026-2887 (GCVE-0-2026-2887)

FKIE_CVE-2026-2887

GHSA-V43P-PV9W-GQMF

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour