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CVE-2026-2436

Full vulnerability record from the local CVENow database.

Description

A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()` function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service.

Severity
HIGH
CVSS score
8.2 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-03-26 20:16:11.720000
Last modified
2026-11-05 20:17:57.737000
View original CVE JSON
{
  "id": "CVE-2026-2436",
  "sourceIdentifier": "[email protected]",
  "published": "2026-03-26T20:16:11.720",
  "lastModified": "2026-11-05T20:17:57.737",
  "vulnStatus": "Analyzed",
  "cveTags": [],
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      "value": "A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()` function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service."
    },
    {
      "lang": "es",
      "value": "Se encontró un defecto en el SoupServer de libsoup. Un atacante remoto podría explotar una vulnerabilidad de uso después de liberación donde la función 'soup_server_disconnect()' libera objetos de conexión prematuramente, incluso si un handshake TLS todavía está pendiente. Si el handshake se completa después de que el objeto de conexión ha sido liberado, se accede a un puntero colgante, lo que lleva a un fallo del servidor y a una denegación de servicio."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
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          "product": "Red Hat Enterprise Linux 10",
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          "packageName": "libsoup3",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:10"
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          "baseScore": 6.5,
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          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
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          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
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        "exploitabilityScore": 2.2,
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    ],
    "ssvcV203": [
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        "ssvcData": {
          "timestamp": "2026-03-27T19:47:34.578740Z",
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  "weaknesses": [
    {
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        }
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  ],
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}