Vulnerability-Lookup

CVE-2026-2709 (GCVE-0-2026-2709)

Vulnerability from cvelistv5 – Published: 2026-02-19 06:32 – Updated: 2026-02-23 18:38

Title

busy Callback app.js redirect

Summary

A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Severity

5.1 (Medium)


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

3.5 (Low)


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

3.5 (Low)


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

3.5 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-23 18:36 UTC

CWE

CWE-601 - Open Redirect

Assigner

VulDB

References

5 references

URL	Tags
https://vuldb.com/?id.346661	vdb-entrytechnical-description
https://vuldb.com/?ctiid.346661	signaturepermissions-required
https://vuldb.com/?submit.753299	third-party-advisory
https://github.com/busyorg/busy/issues/2287	issue-tracking
https://github.com/busyorg/busy/issues/2287#issue…	exploitissue-tracking

Impacted products

1 product

Vendor	Product	Version
n/a	busy	Affected: 2.5.0 Affected: 2.5.1 Affected: 2.5.2 Affected: 2.5.3 Affected: 2.5.4 Affected: 2.5.5

Credits

ZAST.AI (VulDB User)

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 3.5,
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              "confidentialityImpact": "NONE",
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                "id": "CVE-2026-2709",
                "options": [
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                    "Exploitation": "poc"
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                  },
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                    "Technical Impact": "partial"
                  }
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          "modules": [
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          ],
          "product": "busy",
          "vendor": "n/a",
          "versions": [
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              "status": "affected",
              "version": "2.5.0"
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    "dateReserved": "2026-02-18T20:00:57.543Z",
    "dateUpdated": "2026-02-23T18:38:38.945Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-08-12",
      "epss": "0.00258",
      "percentile": "0.1752"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-2709\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-02-19T07:17:50.553\",\"lastModified\":\"2026-06-17T10:31:35.070\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado una vulnerabilidad en busy hasta la versi\u00f3n 2.5.5 que afecta a una funci\u00f3n desconocida del archivo source-code/busy-master/src/server/app.js del componente Callback Gestor. 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    "redhat_vex": {
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      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "busy Callback app.js redirect",
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      "version": "3"
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    "vulnrichment": {
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}

FKIE_CVE-2026-2709

Vulnerability from fkie_nvd - Published: 2026-02-19 07:17 - Updated: 2026-06-17 10:31

Severity

3.5 (Low) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
3.5 (Low) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/busyorg/busy/issues/2287
	cna@vuldb.com	https://github.com/busyorg/busy/issues/2287#issue-3905518966
	cna@vuldb.com	https://vuldb.com/?ctiid.346661
	cna@vuldb.com	https://vuldb.com/?id.346661
	cna@vuldb.com	https://vuldb.com/?submit.753299

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "modules": [
            "Callback Handler"
          ],
          "product": "busy",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "2.5.0"
            },
            {
              "status": "affected",
              "version": "2.5.1"
            },
            {
              "status": "affected",
              "version": "2.5.2"
            },
            {
              "status": "affected",
              "version": "2.5.3"
            },
            {
              "status": "affected",
              "version": "2.5.4"
            },
            {
              "status": "affected",
              "version": "2.5.5"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad en busy hasta la versi\u00f3n 2.5.5 que afecta a una funci\u00f3n desconocida del archivo source-code/busy-master/src/server/app.js del componente Callback Gestor. Si se manipula el argumento state se puede provocar una redirecci\u00f3n abierta. Es posible lanzar el ataque en remoto. El exploit ha sido publicado y puede ser utilizado. Se inform\u00f3 al proyecto de la divulgaci\u00f3n con antelaci\u00f3n a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido."
    }
  ],
  "id": "CVE-2026-2709",
  "lastModified": "2026-06-17T10:31:35.070",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.5,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.5,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.0,
          "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": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/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": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2709",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-23T18:36:39.542842Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-19T07:17:50.553",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/busyorg/busy/issues/2287"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/busyorg/busy/issues/2287#issue-3905518966"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?ctiid.346661"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?id.346661"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?submit.753299"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-PC7G-8V63-Q7V6

Vulnerability from github – Published: 2026-02-19 18:31 – Updated: 2026-02-19 18:31

Details

Severity

3.5 (Low)


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

2.0 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-2709"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-19T07:17:50Z",
    "severity": "MODERATE"
  },
  "details": "A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "GHSA-pc7g-8v63-q7v6",
  "modified": "2026-02-19T18:31:51Z",
  "published": "2026-02-19T18:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2709"
    },
    {
      "type": "WEB",
      "url": "https://github.com/busyorg/busy/issues/2287"
    },
    {
      "type": "WEB",
      "url": "https://github.com/busyorg/busy/issues/2287#issue-3905518966"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.346661"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.346661"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.753299"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/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.

Action not permitted

CVE-2026-2709 (GCVE-0-2026-2709)

FKIE_CVE-2026-2709

GHSA-PC7G-8V63-Q7V6

Tags

Sightings

Nomenclature