Common Weakness Enumeration

CWE-1088

Allowed

Synchronous Access of Remote Resource without Timeout

Abstraction: Base · Status: Incomplete

The code has a synchronous call to a remote resource, but there is no timeout for the call, or the timeout is set to infinite.

15 vulnerabilities reference this CWE, most recent first.

CVE-2026-103649 (GCVE-0-2026-103649)

Vulnerability from cvelistv5 – Published: 2026-10-08 10:53 – Updated: 2026-10-08 14:24
VLAI
Title
Synchronous Access of Remote Resource without Timeout in hMailServer
Summary
Missing network timeouts in the Linux builds of Progressive Robot hMailServer 6.3.0 through 6.3.5 allow a remote attacker to hold server threads indefinitely and so stop outbound mail delivery (denial of service). The server set its socket timeouts in the form Windows takes, which Linux refuses, and its HTTPS clients read without a deadline, so a peer that accepts a connection and then sends nothing held the waiting thread for as long as the connection stayed open. The MTA-STS policy fetch, enabled by default, is made during outbound delivery to mta-sts.<recipient domain>, so anyone who can make the server deliver mail to a domain they control - for example as the envelope sender of a message that bounces - can hold delivery threads until outbound delivery stops. The same flaw affects the DANE TLSA query, the OAuth2 token request, the ACME client, and the ManageSieve and metrics listeners, which a silent client stops from serving anyone else. Windows builds are not affected.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 14:24 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
Assigner
GitLab CNA under the mitre root
CNA scorecard C 75/100 over 288 records in the last 180 days details
Impacted products
Vendor Product Version
Progressive Robot Ltd hMailServer Affected: 6.3.0 , < 6.3.6 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-89147 (GCVE-0-2026-89147)

Vulnerability from cvelistv5 – Published: 2026-09-11 10:46 – Updated: 2026-09-24 14:21
VLAI
Title
Net-SNMP through 5.9.5.2 Denial of Service via Blocking Unauthenticated SMUX Read
Summary
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SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 16:06 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5285 records in the last 180 days details
Impacted products
Vendor Product Version
net-snmp Net-SNMP Affected: 0 , ≤ 5.9.5.2 (custom)
    cpe:2.3:a:net-snmp:net-snmp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-09 00:00
Credits
Show details on NVD website

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CVE-2026-81520 (GCVE-0-2026-81520)

Vulnerability from cvelistv5 – Published: 2026-08-28 20:22 – Updated: 2026-08-31 18:36
VLAI
Title
MongoDB Connector for BI Unbounded Authentication Negotiation Leading to Connection Exhaustion
Summary
A network-reachable client that has not yet authenticated can hold a MongoDB Connector for BI authentication session open indefinitely by beginning a SASL-based login exchange and then declining to complete it. Because the negotiation loop had no overall time bound and the read from the client had no deadline, each such session retains a worker, a client connection slot, and its associated backend database connections until the process is restarted. Repeated use of this behavior can consume the configured connection capacity and prevent legitimate users from establishing new sessions.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:36 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
Assigner
mongodb CNA under the mitre root
CNA scorecard C 70/100 over 197 records in the last 180 days details
Impacted products
Vendor Product Version
MongoDB BI Connector Affected: 0 , < 2.14.31 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2025-4656 (GCVE-0-2025-4656)

Vulnerability from cvelistv5 – Published: 2025-06-25 16:15 – Updated: 2025-06-25 20:05
VLAI
Title
Vault Vulnerable to Recovery Key Cancellation Denial of Service
Summary
Vault Community and Vault Enterprise rekey and recovery key operations can lead to a denial of service due to uncontrolled cancellation by a Vault operator. This vulnerability (CVE-2025-4656) has been remediated in Vault Community Edition 1.20.0 and Vault Enterprise 1.20.0, 1.19.6, 1.18.11, 1.17.17, and 1.16.22.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-25 20:05 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
Assigner
HashiCorp CNA under the mitre root
CNA scorecard C 70/100 over 45 records in the last 180 days details
Impacted products
Vendor Product Version
HashiCorp Vault Affected: 1.14.8 , < 1.20.0 (semver)
Create a notification for this product.
HashiCorp Vault Enterprise Affected: 1.14.8 , < 1.20.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2024-12777 (GCVE-0-2024-12777)

Vulnerability from cvelistv5 – Published: 2025-03-20 10:11 – Updated: 2025-03-20 13:30
VLAI
Title
Denial of Service in aimhubio/aim
Summary
A vulnerability in aimhubio/aim version 3.25.0 allows for a denial of service through the misuse of the sshfs-client. The tracking server, which is single-threaded, can be made unresponsive by requesting it to connect to an unresponsive socket via sshfs. The lack of an additional timeout setting in the sshfs-client causes the server to hang for a significant amount of time, preventing it from responding to other requests.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-20 13:30 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
Assigner
@huntr_ai CNA under the mitre root
CNA scorecard C 65/100 over 43 records in the last 180 days details
Impacted products
Vendor Product Version
aimhubio aimhubio/aim Affected: unspecified , ≤ latest (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2024-8062 (GCVE-0-2024-8062)

Vulnerability from cvelistv5 – Published: 2025-03-20 10:11 – Updated: 2025-03-20 15:23
VLAI
Title
Denial of Service in h2oai/h2o-3
Summary
A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a `HEAD` request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-20 15:23 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
Assigner
@huntr_ai CNA under the mitre root
CNA scorecard C 65/100 over 43 records in the last 180 days details
Impacted products
Vendor Product Version
h2oai h2oai/h2o-3 Affected: unspecified , ≤ latest (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2024-8061 (GCVE-0-2024-8061)

Vulnerability from cvelistv5 – Published: 2025-03-20 10:10 – Updated: 2025-10-15 12:49
VLAI
Title
Denial of Service in aimhubio/aim
Summary
In version 3.23.0 of aimhubio/aim, certain methods that request data from external servers do not have set timeouts, causing the server to wait indefinitely for a response. This can lead to a denial of service, as the tracking server does not respond to other requests while waiting. The issue arises in the client used by the `aim` tracking server to communicate with external resources, specifically in the `_run_read_instructions` method and similar calls without timeouts.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-20 17:52 UTC
CWE
  • CWE-1088 - Synchronous Access of Remote Resource without Timeout
Assigner
@huntr_ai CNA under the mitre root
CNA scorecard C 65/100 over 43 records in the last 180 days details
Impacted products
Vendor Product Version
aimhubio aimhubio/aim Affected: unspecified , ≤ latest (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2020-14483 (GCVE-0-2020-14483)

Vulnerability from cvelistv5 – Published: 2020-08-13 14:41 – Updated: 2024-08-04 12:46
VLAI
Summary
A timeout during a TLS handshake can result in the connection failing to terminate. This can result in a Niagara thread hanging and requires a manual restart of Niagara (Versions 4.6.96.28, 4.7.109.20, 4.7.110.32, 4.8.0.110) and Niagara Enterprise Security (Versions 2.4.31, 2.4.45, 4.8.0.35) to correct.
Severity
No CVSS data available.
CWE
  • CWE-1088 - SYNCHRONOUS ACCESS OF REMOTE RESOURCE WITHOUT TIMEOUT CWE-1088
Assigner
icscert CNA under the icscert root
CNA scorecard C 75/100 over 338 records in the last 180 days details
References
Impacted products
Vendor Product Version
n/a Niagara Affected: Niagara: Versions 4.6.96.28, 4.7.109.20, 4.7.110.32, 4.8.0.110 and Niagara Enterprise Security: Versions 2.4.31, 2.4.45, 4.8.0.35
Show details on NVD website

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              "name": "https://us-cert.cisa.gov/ics/advisories/icsa-20-224-03",
              "refsource": "MISC",
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-224-03"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
    "cveId": "CVE-2020-14483",
    "datePublished": "2020-08-13T14:41:35.000Z",
    "dateReserved": "2020-06-19T00:00:00.000Z",
    "dateUpdated": "2024-08-04T12:46:34.631Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-3JQW-CRQJ-W8QW

Vulnerability from github – Published: 2018-07-23 19:51 – Updated: 2024-09-16 22:34
VLAI
Summary
Denial of service in django
Details

The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 relies on Python libraries that attempt access to an arbitrary URL with no timeout, which allows remote attackers to cause a denial of service (resource consumption) via a URL associated with (1) a slow response, (2) a completed TCP connection with no application data sent, or (3) a large amount of application data, a related issue to CVE-2011-1521.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Django"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.3"
            },
            {
              "fixed": "1.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2011-4137"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1088"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T20:55:25Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 relies on Python libraries that attempt access to an arbitrary URL with no timeout, which allows remote attackers to cause a denial of service (resource consumption) via a URL associated with (1) a slow response, (2) a completed TCP connection with no application data sent, or (3) a large amount of application data, a related issue to CVE-2011-1521.",
  "id": "GHSA-3jqw-crqj-w8qw",
  "modified": "2024-09-16T22:34:20Z",
  "published": "2018-07-23T19:51:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-4137"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/1a76dbefdfc60e2d5954c0ba614c3d054ba9c3f0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/django/django/commit/7268f8af86186518821d775c530d5558fd726930"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=737366"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3jqw-crqj-w8qw"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/django/django"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2011-2.yaml"
    },
    {
      "type": "WEB",
      "url": "https://hermes.opensuse.org/messages/14700881"
    },
    {
      "type": "WEB",
      "url": "https://www.djangoproject.com/weblog/2011/sep/09"
    },
    {
      "type": "WEB",
      "url": "https://www.djangoproject.com/weblog/2011/sep/10/127"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2011/09/11/1"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2011/09/13/2"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2011/09/15/5"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2011/dsa-2332"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Denial of service in django"
}

GHSA-435G-JWV8-462Q

Vulnerability from github – Published: 2026-08-29 00:31 – Updated: 2026-08-29 00:31
VLAI
Details

A network-reachable client that has not yet authenticated can hold a MongoDB Connector for BI authentication session open indefinitely by beginning a SASL-based login exchange and then declining to complete it. Because the negotiation loop had no overall time bound and the read from the client had no deadline, each such session retains a worker, a client connection slot, and its associated backend database connections until the process is restarted. Repeated use of this behavior can consume the configured connection capacity and prevent legitimate users from establishing new sessions.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-81520"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1088"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T22:16:54Z",
    "severity": "HIGH"
  },
  "details": "A network-reachable client that has not yet authenticated can hold a MongoDB Connector for BI authentication session open indefinitely by beginning a SASL-based login exchange and then declining to complete it. Because the negotiation loop had no overall time bound and the read from the client had no deadline, each such session retains a worker, a client connection slot, and its associated backend database connections until the process is restarted. Repeated use of this behavior can consume the configured connection capacity and prevent legitimate users from establishing new sessions.",
  "id": "GHSA-435g-jwv8-462q",
  "modified": "2026-08-29T00:31:03Z",
  "published": "2026-08-29T00:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81520"
    },
    {
      "type": "WEB",
      "url": "https://www.mongodb.com/docs/bi-connector/current/release-notes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.