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CVE-2026-25140

Estado: AnalizadaAlta (7.5)—

apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, an attacker who controls or compromises an APK repository used by apko could cause resource exhaustion on the build host. The ExpandApk function in pkg/apk/expandapk/expandapk.go expands .apk streams without enforcing decompression limits, allowing a malicious repository to serve a small, highly-compressed .apk that inflates into a large tar stream, consuming excessive disk space and CPU time, causing build failures or denial of service. This issue has been patched in version 1.1.1.

CVSS

Probabilidad de explotación (EPSS)

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.

Vector CVSS AV:N/AC:L/PR:N: red sin autenticación. APK malicioso comprimido causa exhaustión de recursos (CWE-400, CWE-770) en el host de compilación, reflejando DoS por consumo de almacenamiento y CPU.

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Chainguard — Apko

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-25140",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "id": "CVE-2026-25140",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-04T19:17:26.936567Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "security-advisories@github.com",
        "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:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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              "version": ">= 0.14.8, < 1.1.1"
            }
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  "published": "2026-02-04T19:16:15.117",
  "references": [
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      "url": "https://github.com/chainguard-dev/apko/commit/2be3903fe194ad46351840f0569b35f5ac965f09",
      "tags": [
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      "source": "nvd@nist.gov",
      "description": [
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  "descriptions": [
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      "lang": "en",
      "value": "apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, an attacker who controls or compromises an APK repository used by apko could cause resource exhaustion on the build host. The ExpandApk function in pkg/apk/expandapk/expandapk.go expands .apk streams without enforcing decompression limits, allowing a malicious repository to serve a small, highly-compressed .apk that inflates into a large tar stream, consuming excessive disk space and CPU time, causing build failures or denial of service. This issue has been patched in version 1.1.1."
    },
    {
      "lang": "es",
      "value": "apko permite a los usuarios construir y publicar imágenes de contenedor OCI construidas a partir de paquetes apk. Desde la versión 0.14.8 hasta antes de la 1.1.1, un atacante que controle o comprometa un repositorio APK utilizado por apko podría causar el agotamiento de recursos en el host de compilación. La función ExpandApk en pkg/apk/expandapk/expandapk.go expande flujos .apk sin aplicar límites de descompresión, permitiendo que un repositorio malicioso sirva un .apk pequeño y altamente comprimido que se infla en un gran flujo tar, consumiendo espacio en disco y tiempo de CPU excesivos, causando fallos de compilación o denegación de servicio. Este problema ha sido parcheado en la versión 1.1.1."
    }
  ],
  "lastModified": "2026-06-17T10:24:10.650",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "1.1.1",
              "versionStartIncluding": "0.14.8"
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          ],
          "operator": "OR"
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}