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CVE-2026-54135 (GCVE-0-2026-54135)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:44 – Updated: 2026-09-11 19:44
VLAI
Title
AirSane has a Remote Denial of Service (OOM) via Unvalidated Content-Length in HTTP Server
Summary
AirSane is a SANE frontend, and a scanner server that supports Apple's AirScan protocol. Versions prior to 0.4.12 have a vulnerability in the custom HTTP server implementation of AirSane that allows a remote unauthenticated attacker to cause a Denial of Service (DoS) via memory exhaustion (OOM). In httpserver.cpp, the HttpServer::Request::content function reads the Content-Length header and directly passes this value to std::string::resize() without any upper-bound validation or safe parsing. An attacker can send an HTTP POST request with an artificially large Content-Length value. This forces the daemon to attempt allocating gigabytes of memory, resulting in a std::bad_alloc exception and immediately crashing the AirSane process. Additionally, providing non-numeric characters in the Content-Length header leads to undefined behavior (NaN to integer conversion) due to the lack of error handling during header parsing. Version 0.4.12 patches the issue.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version CPE status
SimulPiscator AirSane Affected: < 0.4.12
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
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            "privilegesRequired": "NONE",
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      "providerMetadata": {
        "dateUpdated": "2026-09-11T19:44:39.687Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
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          "url": "https://github.com/SimulPiscator/AirSane/commit/129cc3bf7258251a0a694dee7741285b59d88f9f"
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        }
      ],
      "source": {
        "advisory": "GHSA-p5hv-3m79-452q",
        "discovery": "UNKNOWN"
      },
      "title": "AirSane has a Remote Denial of Service (OOM) via Unvalidated Content-Length in HTTP Server"
    }
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54135",
    "datePublished": "2026-09-11T19:44:39.687Z",
    "dateReserved": "2026-06-11T21:15:33.870Z",
    "dateUpdated": "2026-09-11T19:44:39.687Z",
    "state": "PUBLISHED"
  },
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.