CVE-2021-43957
Estado: ModificadaAlta (7.5)—
Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (IDOR) vulnerability in the WEB-INF directory and bypass the fix for CVE-2020-29446 due to a lack of url decoding. The affected versions are before version 4.8.9.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.29%
- Percentil entre todas las CVEs puntuadas: 69
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- CWE-639
- CWE-639
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-43957",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-43957",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-10-04T18:46:00.111042Z"
}
}
],
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "security@atlassian.com",
"affectedData": [
{
"vendor": "Atlassian",
"product": "Fisheye",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "4.8.9",
"versionType": "custom"
}
]
},
{
"vendor": "Atlassian",
"product": "Crucible",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "4.8.9",
"versionType": "custom"
}
]
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"affectedData": [
{
"cpes": [
"cpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:*"
],
"vendor": "atlassian",
"product": "fisheye",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "4.8.9",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:*"
],
"vendor": "atlassian",
"product": "crucible",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "4.8.9",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2022-03-16T01:15:07.877",
"references": [
{
"url": "https://jira.atlassian.com/browse/CRUC-8524",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "security@atlassian.com"
},
{
"url": "https://jira.atlassian.com/browse/FE-7388",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "security@atlassian.com"
},
{
"url": "https://jira.atlassian.com/browse/CRUC-8524",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://jira.atlassian.com/browse/FE-7388",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-639"
}
]
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-639"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (IDOR) vulnerability in the WEB-INF directory and bypass the fix for CVE-2020-29446 due to a lack of url decoding. The affected versions are before version 4.8.9."
},
{
"lang": "es",
"value": "Las versiones afectadas de Atlassian Fisheye y Crucible permitían a atacantes remotos navegar por archivos locales por medio de una vulnerabilidad de Insecure Direct Object References (IDOR) en el directorio WEB-INF y omitir la corrección de CVE-2020-29446 debido a una falta de decodificación de url. Las versiones afectadas son anteriores a la versión 4.8.9"
}
],
"lastModified": "2026-06-17T04:11:41.937",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4D4FEF8B-76B5-4DB1-BC60-FE05BB918444",
"versionEndExcluding": "4.8.9"
},
{
"criteria": "cpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5C288EF9-2CF5-40F1-BC5E-C4C1EAE30B14",
"versionEndExcluding": "4.8.9"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "security@atlassian.com"
}