Vulnerability-Lookup

GHSA-RPMF-866Q-6P89

Vulnerability from github – Published: 2026-05-06 19:37 – Updated: 2026-05-13 16:29

Summary

basic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response buffering

Details

Summary

basic-ftp is vulnerable to client-side denial of service when parsing FTP control-channel multiline responses.

A malicious or compromised FTP server can send an unterminated multiline response during the initial FTP banner phase, before authentication. The client keeps appending attacker-controlled data into FtpContext._partialResponse and repeatedly reparses the accumulated buffer without enforcing a maximum control response size.

As a result, an application using basic-ftp can remain stuck in connect() while memory and CPU usage grow under attacker-controlled input. This can lead to process-level denial of service, container OOM kills, worker restarts, queue backlog, or service degradation in applications that automatically connect to FTP endpoints.

Details

Root cause

The root cause is that incomplete FTP multiline control responses are buffered without an upper bound.

FtpContext stores incomplete control-channel data in _partialResponse:

https://github.com/patrickjuchli/basic-ftp/blob/50827c73ca6c1d786c97276e47be8a33d0f2277d/src/FtpContext.ts#L63-L64

Incoming control-channel data is handled in _onControlSocketData. The implementation concatenates the previous incomplete response with the new chunk, parses the entire accumulated string, and stores parsed.rest back into _partialResponse:

https://github.com/patrickjuchli/basic-ftp/blob/50827c73ca6c1d786c97276e47be8a33d0f2277d/src/FtpContext.ts#L328-L340

The relevant flow is:

completeResponse = this._partialResponse + chunk parsed = parseControlResponse(completeResponse) this._partialResponse = parsed.rest

There is no maximum size check before concatenating, before parsing, or before storing parsed.rest.

The parser accepts incomplete multiline responses and returns the entire unterminated multiline group as rest:

https://github.com/patrickjuchli/basic-ftp/blob/50827c73ca6c1d786c97276e47be8a33d0f2277d/src/parseControlResponse.ts#L15-L43

If a server starts a multiline FTP response:

220-malicious banner starts

but never sends the terminating line:

220 ready

then parseControlResponse() treats the accumulated multiline data as incomplete and returns it as rest.

Because _onControlSocketData() feeds _partialResponse + chunk back into the parser on every new data event, the client repeatedly reparses a growing attacker-controlled buffer. This creates both memory growth and increasing parsing work.

Why this is security-relevant

The vulnerable component is a client library. The attacker does not need to authenticate to the victim system and does not need valid FTP credentials.

The attack occurs automatically when an application using basic-ftp connects to a malicious or compromised FTP server. The malicious response is sent as the FTP server banner before login. No additional user interaction is required after the application initiates a normal FTP connection.

This is realistic for applications that use FTP for:

scheduled imports or exports
customer-provided FTP endpoints
backup or synchronization jobs
CI/CD artifact mirroring
document ingestion pipelines
legacy business integrations

In those environments, one malicious or compromised FTP endpoint can cause the Node.js process using basic-ftp to consume excessive memory and CPU or remain stuck in a pending connection state.

Proof of Concept

The PoC uses a local malicious FTP server that accepts a victim connection and sends an unterminated multiline FTP banner. The banner starts with 220-, but the server never sends the required terminating 220 line.

Reproduction steps

From the root of the basic-ftp project:

npm ci
npm run buildOnly

poc_control_parser_direct.js

CHUNKS=1000 node poc_control_parser_direct.js | tee poc-results/parser_direct_1000.log

parser_direct_1000.log

Run the end-to-end malicious FTP server PoC:

poc_control_multiline_dos.js

CHUNK_SIZE=8192 CHUNKS=1000 DELAY_MS=1 node poc_control_multiline_dos.js | tee poc-results/control_multiline_dos_1000.log

control_multiline_dos_1000.log

Observed result: parser-only PoC

[basic-ftp parseControlResponse incomplete multiline DoS]
Input fed: 7.81 MiB
Retained rest: 7.81 MiB
Initial rss/heap: 54.77 MiB 3.69 MiB
Final   rss/heap: 141.64 MiB 80.77 MiB

This shows that parseControlResponse() retained the full unterminated multiline response as rest.

The retained buffer grew to 7.81 MiB. Heap usage increased from 3.69 MiB to 80.77 MiB, and RSS increased from 54.77 MiB to 141.64 MiB.

Observed result: end-to-end malicious FTP server PoC

[server] listening on 127.0.0.1:34429
[server] victim connected
[progress] chunks=850 sent=6.6 MiB partialResponse=6.6 MiB heapUsed=227.5 MiB rss=292.4 MiB
[progress] chunks=900 sent=7.0 MiB partialResponse=7.0 MiB heapUsed=213.1 MiB rss=278.0 MiB
[final-before-close] chunks=1000 sent=7.8 MiB partialResponse=7.8 MiB heapUsed=82.1 MiB rss=146.8 MiB
[result] client connect() is still pending because the multiline response never terminated

Only 7.8 MiB of malicious control-channel data was sent. The client retained 7.8 MiB in _partialResponse, showed large memory spikes, and remained pending inside connect() because the multiline response was never terminated.

Expected behavior

The client should enforce a maximum size for incomplete FTP control responses. If the accumulated multiline response exceeds a safe limit, the client should close the connection and reject the active task with an error.

The client should not allow a remote FTP server to make _partialResponse grow without bound.

Actual behavior

A malicious FTP server can keep the client in a pending connection state by sending an unterminated multiline control response. basic-ftp continues buffering and reparsing the accumulated data without a maximum response size.

Impact

A malicious or compromised FTP server can cause denial of service in applications using basic-ftp.

Possible real-world impact includes:

Node.js process memory exhaustion
container OOM kill
worker crash or restart loop
event loop CPU pressure due to repeated reparsing
stuck FTP jobs
queue backlog in scheduled import/export systems
degraded availability of services relying on automated FTP ingestion

Threat model

The attacker controls, compromises, or can impersonate an FTP server that a victim application connects to.

Examples:

A SaaS application allows customers to configure external FTP endpoints for automated imports.
A backend job periodically pulls files from partner FTP servers.
A document ingestion pipeline connects to FTP endpoints supplied by external users.
A legacy integration uses FTP for scheduled synchronization.
A build or deployment pipeline mirrors artifacts from an FTP server.

In each case, the victim application initiates a normal FTP connection. The malicious server sends an unterminated multiline banner before authentication. The vulnerable client then buffers and reparses the response indefinitely.

No FTP credentials are required for exploitation because the attack happens before login.

Suggested fix

Introduce a maximum control response buffer size, especially for incomplete multiline responses.

Recommended changes:

Add a maxControlResponseBytes or maxControlResponseLength limit.
Enforce the limit before or immediately after appending new control-channel data.
Close the connection and reject the active task when the limit is exceeded.
Add regression tests for unterminated multiline responses.

Example defensive logic:

if (completeResponse.length > maxControlResponseLength) {
    closeWithError(new Error("FTP control response exceeded maximum allowed size"))
}

A regression test should verify that a response beginning with 220- and never terminating with 220 is rejected after the configured size limit instead of being retained indefinitely.

Suggested regression test scenario

A test server should:

Accept a client connection.
Send an FTP multiline response opener such as 220-malicious banner\r\n.
Continue sending additional lines without ever sending the terminating 220 line.
Verify that the client rejects the connection once the configured response-size limit is exceeded.
Verify that _partialResponse does not grow without bound.

Credit request

If you publish an advisory or assign a CVE, please credit me as:

Ali Firas (thesmartshadow) - https://www.smartshadow.dev

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.3.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "basic-ftp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44240"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-06T19:37:33Z",
    "nvd_published_at": "2026-05-12T21:16:16Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\n`basic-ftp` is vulnerable to client-side denial of service when parsing FTP control-channel multiline responses.\n\nA malicious or compromised FTP server can send an unterminated multiline response during the initial FTP banner phase, before authentication. The client keeps appending attacker-controlled data into `FtpContext._partialResponse` and repeatedly reparses the accumulated buffer without enforcing a maximum control response size.\n\nAs a result, an application using `basic-ftp` can remain stuck in `connect()` while memory and CPU usage grow under attacker-controlled input. This can lead to process-level denial of service, container OOM kills, worker restarts, queue backlog, or service degradation in applications that automatically connect to FTP endpoints.\n\n---\n\n## Details\n\n### Root cause\n\nThe root cause is that incomplete FTP multiline control responses are buffered without an upper bound.\n\n`FtpContext` stores incomplete control-channel data in `_partialResponse`:\n\n\nhttps://github.com/patrickjuchli/basic-ftp/blob/50827c73ca6c1d786c97276e47be8a33d0f2277d/src/FtpContext.ts#L63-L64\n\n\nIncoming control-channel data is handled in `_onControlSocketData`. The implementation concatenates the previous incomplete response with the new chunk, parses the entire accumulated string, and stores `parsed.rest` back into `_partialResponse`:\n\n\nhttps://github.com/patrickjuchli/basic-ftp/blob/50827c73ca6c1d786c97276e47be8a33d0f2277d/src/FtpContext.ts#L328-L340\n\n\nThe relevant flow is:\n\n\ncompleteResponse = this._partialResponse + chunk\nparsed = parseControlResponse(completeResponse)\nthis._partialResponse = parsed.rest\n\n\nThere is no maximum size check before concatenating, before parsing, or before storing `parsed.rest`.\n\nThe parser accepts incomplete multiline responses and returns the entire unterminated multiline group as `rest`:\n\n\nhttps://github.com/patrickjuchli/basic-ftp/blob/50827c73ca6c1d786c97276e47be8a33d0f2277d/src/parseControlResponse.ts#L15-L43\n\n\nIf a server starts a multiline FTP response:\n\n\n220-malicious banner starts\n\n\nbut never sends the terminating line:\n\n\n220 ready\n\n\nthen `parseControlResponse()` treats the accumulated multiline data as incomplete and returns it as `rest`.\n\nBecause `_onControlSocketData()` feeds `_partialResponse + chunk` back into the parser on every new data event, the client repeatedly reparses a growing attacker-controlled buffer. This creates both memory growth and increasing parsing work.\n\n### Why this is security-relevant\n\nThe vulnerable component is a client library. The attacker does not need to authenticate to the victim system and does not need valid FTP credentials.\n\nThe attack occurs automatically when an application using `basic-ftp` connects to a malicious or compromised FTP server. The malicious response is sent as the FTP server banner before login. No additional user interaction is required after the application initiates a normal FTP connection.\n\nThis is realistic for applications that use FTP for:\n\n- scheduled imports or exports\n- customer-provided FTP endpoints\n- backup or synchronization jobs\n- CI/CD artifact mirroring\n- document ingestion pipelines\n- legacy business integrations\n\nIn those environments, one malicious or compromised FTP endpoint can cause the Node.js process using `basic-ftp` to consume excessive memory and CPU or remain stuck in a pending connection state.\n\n---\n\n## Proof of Concept\n\nThe PoC uses a local malicious FTP server that accepts a victim connection and sends an unterminated multiline FTP banner. The banner starts with `220-`, but the server never sends the required terminating `220 ` line.\n\n### Reproduction steps\n\nFrom the root of the `basic-ftp` project:\n\n```bash\nnpm ci\nnpm run buildOnly\n```\n\n[poc_control_parser_direct.js](https://github.com/user-attachments/files/27051425/poc_control_parser_direct.js)\n\n```bash\nCHUNKS=1000 node poc_control_parser_direct.js | tee poc-results/parser_direct_1000.log\n```\n\n[parser_direct_1000.log](https://github.com/user-attachments/files/27051430/parser_direct_1000.log)\n\nRun the end-to-end malicious FTP server PoC:\n\n[poc_control_multiline_dos.js](https://github.com/user-attachments/files/27051385/poc_control_multiline_dos.js)\n\n```bash\nCHUNK_SIZE=8192 CHUNKS=1000 DELAY_MS=1 node poc_control_multiline_dos.js | tee poc-results/control_multiline_dos_1000.log\n```\n\n[control_multiline_dos_1000.log](https://github.com/user-attachments/files/27051397/control_multiline_dos_1000.log)\n\n### Observed result: parser-only PoC\n\n```text\n[basic-ftp parseControlResponse incomplete multiline DoS]\nInput fed: 7.81 MiB\nRetained rest: 7.81 MiB\nInitial rss/heap: 54.77 MiB 3.69 MiB\nFinal   rss/heap: 141.64 MiB 80.77 MiB\n```\n\nThis shows that `parseControlResponse()` retained the full unterminated multiline response as `rest`.\n\nThe retained buffer grew to `7.81 MiB`. Heap usage increased from `3.69 MiB` to `80.77 MiB`, and RSS increased from `54.77 MiB` to `141.64 MiB`.\n\n### Observed result: end-to-end malicious FTP server PoC\n\n```text\n[server] listening on 127.0.0.1:34429\n[server] victim connected\n[progress] chunks=850 sent=6.6 MiB partialResponse=6.6 MiB heapUsed=227.5 MiB rss=292.4 MiB\n[progress] chunks=900 sent=7.0 MiB partialResponse=7.0 MiB heapUsed=213.1 MiB rss=278.0 MiB\n[final-before-close] chunks=1000 sent=7.8 MiB partialResponse=7.8 MiB heapUsed=82.1 MiB rss=146.8 MiB\n[result] client connect() is still pending because the multiline response never terminated\n```\n\nOnly `7.8 MiB` of malicious control-channel data was sent. The client retained `7.8 MiB` in `_partialResponse`, showed large memory spikes, and remained pending inside `connect()` because the multiline response was never terminated.\n\n---\n\n## Expected behavior\n\nThe client should enforce a maximum size for incomplete FTP control responses. If the accumulated multiline response exceeds a safe limit, the client should close the connection and reject the active task with an error.\n\nThe client should not allow a remote FTP server to make `_partialResponse` grow without bound.\n\n---\n\n## Actual behavior\n\nA malicious FTP server can keep the client in a pending connection state by sending an unterminated multiline control response. `basic-ftp` continues buffering and reparsing the accumulated data without a maximum response size.\n\n---\n\n## Impact\n\nA malicious or compromised FTP server can cause denial of service in applications using `basic-ftp`.\n\nPossible real-world impact includes:\n\n- Node.js process memory exhaustion\n- container OOM kill\n- worker crash or restart loop\n- event loop CPU pressure due to repeated reparsing\n- stuck FTP jobs\n- queue backlog in scheduled import/export systems\n- degraded availability of services relying on automated FTP ingestion\n\n---\n\n## Threat model\n\nThe attacker controls, compromises, or can impersonate an FTP server that a victim application connects to.\n\nExamples:\n\n1. A SaaS application allows customers to configure external FTP endpoints for automated imports.\n2. A backend job periodically pulls files from partner FTP servers.\n3. A document ingestion pipeline connects to FTP endpoints supplied by external users.\n4. A legacy integration uses FTP for scheduled synchronization.\n5. A build or deployment pipeline mirrors artifacts from an FTP server.\n\nIn each case, the victim application initiates a normal FTP connection. The malicious server sends an unterminated multiline banner before authentication. The vulnerable client then buffers and reparses the response indefinitely.\n\nNo FTP credentials are required for exploitation because the attack happens before login.\n\n---\n\n## Suggested fix\n\nIntroduce a maximum control response buffer size, especially for incomplete multiline responses.\n\nRecommended changes:\n\n- Add a `maxControlResponseBytes` or `maxControlResponseLength` limit.\n- Enforce the limit before or immediately after appending new control-channel data.\n- Close the connection and reject the active task when the limit is exceeded.\n- Add regression tests for unterminated multiline responses.\n\nExample defensive logic:\n\n```text\nif (completeResponse.length \u003e maxControlResponseLength) {\n    closeWithError(new Error(\"FTP control response exceeded maximum allowed size\"))\n}\n```\n\nA regression test should verify that a response beginning with `220-` and never terminating with `220 ` is rejected after the configured size limit instead of being retained indefinitely.\n\n---\n\n## Suggested regression test scenario\n\nA test server should:\n\n1. Accept a client connection.\n2. Send an FTP multiline response opener such as `220-malicious banner\\r\\n`.\n3. Continue sending additional lines without ever sending the terminating `220 ` line.\n4. Verify that the client rejects the connection once the configured response-size limit is exceeded.\n5. Verify that `_partialResponse` does not grow without bound.\n\n## Credit request\nIf you publish an advisory or assign a CVE, please credit me as:\n\nAli Firas (thesmartshadow)  - https://www.smartshadow.dev",
  "id": "GHSA-rpmf-866q-6p89",
  "modified": "2026-05-13T16:29:59Z",
  "published": "2026-05-06T19:37:33Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44240"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/patrickjuchli/basic-ftp"
    }
  ],
  "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"
    }
  ],
  "summary": "basic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response buffering"
}

CVE-2026-44240 (GCVE-0-2026-44240)

Vulnerability from cvelistv5 – Published: 2026-05-12 20:37 – Updated: 2026-05-14 12:31

Title

basic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response buffering

Summary

basic-ftp is an FTP client for Node.js. Prior to 5.3.1, basic-ftp is vulnerable to client-side denial of service when parsing FTP control-channel multiline responses. A malicious or compromised FTP server can send an unterminated multiline response during the initial FTP banner phase, before authentication. The client keeps appending attacker-controlled data into FtpContext._partialResponse and repeatedly reparses the accumulated buffer without enforcing a maximum control response size. As a result, an application using basic-ftp can remain stuck in connect() while memory and CPU usage grow under attacker-controlled input. This can lead to process-level denial of service, container OOM kills, worker restarts, queue backlog, or service degradation in applications that automatically connect to FTP endpoints. This vulnerability is fixed in 5.3.1.

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

GitHub_M

References

1 reference

URL	Tags
https://github.com/patrickjuchli/basic-ftp/securi…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
patrickjuchli	basic-ftp	Affected: < 5.3.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44240",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-14T12:31:54.775969Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-14T12:31:57.807Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "basic-ftp",
          "vendor": "patrickjuchli",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.3.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "basic-ftp is an FTP client for Node.js. Prior to 5.3.1, basic-ftp is vulnerable to client-side denial of service when parsing FTP control-channel multiline responses. A malicious or compromised FTP server can send an unterminated multiline response during the initial FTP banner phase, before authentication. The client keeps appending attacker-controlled data into FtpContext._partialResponse and repeatedly reparses the accumulated buffer without enforcing a maximum control response size. As a result, an application using basic-ftp can remain stuck in connect() while memory and CPU usage grow under attacker-controlled input. This can lead to process-level denial of service, container OOM kills, worker restarts, queue backlog, or service degradation in applications that automatically connect to FTP endpoints. This vulnerability is fixed in 5.3.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-12T20:37:43.098Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      },
      "references": [
        {
          "name": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/patrickjuchli/basic-ftp/security/advisories/GHSA-rpmf-866q-6p89"
        }
      ],
      "source": {
        "advisory": "GHSA-rpmf-866q-6p89",
        "discovery": "UNKNOWN"
      },
      "title": "basic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response buffering"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44240",
    "datePublished": "2026-05-12T20:37:43.098Z",
    "dateReserved": "2026-05-05T15:42:40.519Z",
    "dateUpdated": "2026-05-14T12:31:57.807Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-RPMF-866Q-6P89

Summary

Details

Root cause

Why this is security-relevant

Proof of Concept

Reproduction steps

Observed result: parser-only PoC

Observed result: end-to-end malicious FTP server PoC

Expected behavior

Actual behavior

Impact

Threat model

Suggested fix

Suggested regression test scenario

Credit request

CVE-2026-44240 (GCVE-0-2026-44240)

Tags

Sightings

Nomenclature