Common Weakness Enumeration

CWE-835

Allowed

Loop with Unreachable Exit Condition ('Infinite Loop')

Abstraction: Base · Status: Incomplete

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

1242 vulnerabilities reference this CWE, most recent first.

CVE-2026-102511 (GCVE-0-2026-102511)

Vulnerability from cvelistv5 – Published: 2026-09-30 08:03 – Updated: 2026-09-30 16:43
VLAI
Title
Apache PLC4X, Apache PLC4X, Apache PLC4X, Apache PLC4X: ADS discovery accepts spoofed responses and derives the connection target from them
Summary
Improper Verification of Source of a Communication Channel in the ADS discovery of the Go implementation of Apache PLC4X (PLC4Go) allows an attacker able to send UDP datagrams to the discovering host to redirect subsequent connections to an arbitrary, attacker-chosen address. The discovery result's connection address was derived from the AmsNetId claimed in the response body rather than from the datagram's actual source address. One spoofed discovery response can therefore insert an inventory entry pointing at any host, including hosts outside the local network, and an application that connects to discovered devices will open its ADS session, including any configured route credentials, to that host. Additionally, discovery listeners in both implementations can be disabled by a single malformed datagram: - In PLC4Go ADS discovery, a short version block causes a panic that ends the listener for the rest of the discovery call, so legitimate devices answering afterwards are not reported. - In PLC4J, the ADS and EtherNet/IP discoverers stop on an unhandled exception from a malformed response. - The PLC4J Modbus discoverer can be made to spin indefinitely, consuming a CPU core, by a scanned host that sends a partial response. Exploitation requires the application to invoke the discovery API, which is opt-in, and for the connection redirect, to act on the discovered items. This issue affects Apache PLC4X: PLC4Go from 0.11.0 before 1.0.0; PLC4J ADS and Modbus drivers from 0.10.0 before 1.0.0; PLC4J EtherNet/IP driver from 0.11.0 before 1.0.0. PLC4Go is consumed as the Go module github.com/apache/plc4x/plc4go; versions refer to the corresponding Apache PLC4X releases. Users are recommended to upgrade to version 1.0.0, which fixes the issue. Version 1.0.0 derives the connection address from the datagram's source address and logs a warning when the claimed AmsNetId disagrees with it.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 16:43 UTC
CWE
  • CWE-940 - Improper Verification of Source of a Communication Channel (f054)
  • CWE-129 - Improper Validation of Array Index (f053, f056 ADS)
  • CWE-248 - Uncaught Exception (f053, f056: one bad datagram kills the listener)
  • CWE-835 - Loop with Unreachable Exit Condition (f056 Modbus: the CPU spin)
Impacted products
Vendor Product Version
Apache Software Foundation Apache PLC4X Affected: 0.11.0 , < 1.0.0 (semver)
Unaffected: 1.0.0 (semver)
Create a notification for this product.
Apache Software Foundation Apache PLC4X Affected: 0.10.0 , < 1.0.0 (semver)
Unaffected: 1.0.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-102253 (GCVE-0-2026-102253)

Vulnerability from cvelistv5 – Published: 2026-09-29 20:11 – Updated: 2026-10-01 15:19 X_Open Source
VLAI
Title
iperf3 < 3.22 UDP Receive Worker Infinite Loop DoS
Summary
iperf3 versions prior to 3.22 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash-loop the server's UDP receive worker into an unrecoverable infinite loop by sending a single crafted control-channel parameter message followed by one 16-byte UDP datagram. Attackers can permanently pin the affected per-stream receive thread at approximately 100% CPU usage, rendering the server unusable until forcibly killed with SIGKILL, as the process does not respond to normal control-channel closure.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:25 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Impacted products
Vendor Product Version
esnet iperf3 Affected: 3.14 , < 3.22 (custom)
    cpe:2.3:a:es:iperf3:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-29 00:00
Show details on NVD website

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CVE-2026-97688 (GCVE-0-2026-97688)

Vulnerability from cvelistv5 – Published: 2026-09-29 15:32 – Updated: 2026-09-29 15:42
VLAI
Title
urllib3: Chunked Deflate streaming can enter an infinite loop
Summary
urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.read_chunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The issue occurs when an untrusted server sends a chunked Deflate response whose decoded body exceeds a positive finite chunk size and whose encoded body has trailing bytes, specifically a response with Transfer-Encoding: chunked and Content-Encoding: deflate, content decoding enabled, and the positive finite amt=N streaming chunk size. The attack mechanism is that a malicious server returns a compressed chunked response with trailing bytes after the Deflate stream. The impact is excessive CPU usage and a request that does not complete, and network read timeouts do not interrupt the loop because no further socket read occurs. This issue is fixed in version 2.8.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:42 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Impacted products
Vendor Product Version
urllib3 urllib3 Affected: >= 2.6.2, < 2.8.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-97362 (GCVE-0-2026-97362)

Vulnerability from cvelistv5 – Published: 2026-09-24 14:49 – Updated: 2026-09-24 15:47 X_Open Source Unsupported When Assigned
VLAI
Title
HFS2 2.4.0 Unauthenticated Denial of Service via Hung Serving Thread
Summary
HFS2 version 2.4.0 and earlier contains a denial of service vulnerability that allows unauthenticated attackers to cause a complete and persistent loss of availability by sending a single crafted request. Attackers can trigger a hung serving thread that enters a busy loop, rendering the entire file server unresponsive to all clients without self-recovery until an operator manually restarts the service.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 15:32 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
References
Impacted products
Vendor Product Version
rejetto hfs2 Affected: 2.0.0 , ≤ 2.4.0 (semver)
    cpe:2.3:a:rejetto:hfs2:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-24 00:00
Show details on NVD website

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CVE-2026-96780 (GCVE-0-2026-96780)

Vulnerability from cvelistv5 – Published: 2026-10-01 20:21 – Updated: 2026-10-01 20:40
VLAI
Title
figlet is vulnerable to denial of service via unbounded loop when whitespaceBreak is used with a small width
Summary
figlet.js is a FIG driver written in JavaScript that aims to implement the FIGfont specification. Prior to 1.11.3, text() and textSync() can enter an unbounded loop when whitespaceBreak is enabled and width is smaller than the rendered width of a single FIGlet character. Under these conditions, breakWord() cannot find a valid break point and returns without consuming a character, so generateFigTextLines() repeatedly processes the same input while consuming CPU and growing memory. The non-default option and attacker-controlled width must both reach an affected call. This issue is fixed in version 1.11.3.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 20:40 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Impacted products
Vendor Product Version
patorjk figlet.js Affected: < 1.11.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-96418 (GCVE-0-2026-96418)

Vulnerability from cvelistv5 – Published: 2026-09-29 09:30 – Updated: 2026-09-29 15:36
VLAI
Title
Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark
Summary
TIFF protocol dissector infinite loop in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:36 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.9 (semver)
Affected: 4.4.0 , < 4.4.19 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-95386 (GCVE-0-2026-95386)

Vulnerability from cvelistv5 – Published: 2026-09-29 09:33 – Updated: 2026-09-29 15:18
VLAI
Title
Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark
Summary
TTL file parser infinite loop in 4.6.0 to 4.6.8 allows denial of service
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:17 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.9 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-94654 (GCVE-0-2026-94654)

Vulnerability from cvelistv5 – Published: 2026-10-02 11:58 – Updated: 2026-10-02 17:25
VLAI
Title
Apache Thrift: Python `TNonblockingServer` busy-loops and stops selecting all fds after an 8192-byte-boundary frame
Summary
Loop with unreachable exit condition ('infinite loop') vulnerability in Apache Thrift python bindings. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 17:24 UTC
CWE
  • CWE-835 - Loop with unreachable exit condition ('infinite loop')
Impacted products
Vendor Product Version
Apache Software Foundation Apache Thrift Affected: 0 , < 0.25.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-93925 (GCVE-0-2026-93925)

Vulnerability from cvelistv5 – Published: 2026-10-02 10:16 – Updated: 2026-10-02 10:53
VLAI
Title
Apache Thrift: C++ `THeaderTransport::writeVarint32()` stack buffer overflow on a negative protocol id
Summary
Stack-based buffer overflow, Incorrect bitwise shift of integer vulnerability in Apache Thrift C++ THeaderProtocol. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 10:51 UTC
CWE
Impacted products
Vendor Product Version
Apache Software Foundation Apache Thrift Affected: 0 , < 0.25.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-93690 (GCVE-0-2026-93690)

Vulnerability from cvelistv5 – Published: 2026-09-18 15:06 – Updated: 2026-09-24 14:23
VLAI
Title
uri-js through 4.4.1 Denial of Service via removeDotSegments
Summary
uri-js through 4.4.1 contains a denial of service vulnerability in the removeDotSegments function that loops infinitely when a path segment begins with Unicode line or paragraph separators. Attackers can trigger this by calling removeDotSegments directly or through normalize/resolve functions with IRI handling enabled, causing the Node.js event loop to block indefinitely until heap exhaustion.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:14 UTC
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Impacted products
Vendor Product Version
garycourt uri-js Affected: 0 , ≤ 4.4.1 (semver)
    cpe:2.3:a:garycourt:uri-js:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-09-17 00:00
Show details on NVD website

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          "url": "https://github.com/garycourt/uri-js/blob/4.4.0/src/uri.ts#L352-L376"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.npmjs.com/package/uri-js/v/4.4.1"
        },
        {
          "name": "VulnCheck Advisory: uri-js through 4.4.1 Denial of Service via removeDotSegments",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/uri-js-through-4.4.1-denial-of-service-via-removedotsegments"
        }
      ],
      "title": "uri-js through 4.4.1 Denial of Service via removeDotSegments",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-93690",
    "datePublished": "2026-09-18T15:06:04.923Z",
    "dateReserved": "2026-09-18T14:39:02.165Z",
    "dateUpdated": "2026-09-24T14:23:06.313Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.