CVE-2026-96807

Estado: Pendiente de análisisMedia (4)—

In Flatpak before 1.18.1, a malicious sandboxed app can replace ~/.var/app/$appid/.ld.so with a symlink, causing regenerate_ld_cache to write files at an arbitrary location. The filenames and content are not attacker controlled, making this hard to exploit.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Puntuación base: 4

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.12%
Percentil entre todas las CVEs puntuadas: 2
Fecha de la puntuación: 5/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto principalT1565.002 Transmitted Data Manipulationimpact65 %
Impacto secundarioT1499.004 Application or System Exploitationimpact40 %

CWE-61 (symlink) y AV:L permiten escalada local desde app sandbox. Impacto I:L confirma modificación de datos; A:L sugiere DoS parcial por corrupción de caché.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence Program Filter Network Traffic Execution Prevention Encrypt Sensitive Information Application Isolation and Sandboxing Exploit Protection

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Flatpak — Flatpak^AI

CWE

CWE-61

Referencias

https://github.com/flatpak/flatpak/security/advisories/GHSA-99wv-m8rp-g58x

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-96807",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-96807",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-26T22:45:37.260895Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 1.4
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "repo": "https://github.com/flatpak/flatpak",
          "vendor": "Flatpak",
          "product": "Flatpak",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.18.1",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "Linux"
          ],
          "programFiles": [
            "common/flatpak-run.c"
          ],
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "regenerate_ld_cache"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-23T17:17:25.703",
  "references": [
    {
      "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-99wv-m8rp-g58x",
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@mitre.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-61"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Flatpak before 1.18.1, a malicious sandboxed app can replace ~/.var/app/$appid/.ld.so with a symlink, causing regenerate_ld_cache to write files at an arbitrary location. The filenames and content are not attacker controlled, making this hard to exploit."
    }
  ],
  "lastModified": "2026-09-26T23:16:42.380",
  "sourceIdentifier": "cve@mitre.org"
}