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    8 vulnerabilities found for monkeytype by monkeytypegame

    CVE-2026-69183 (GCVE-0-2026-69183)

    Vulnerability from nvd – Published: 2026-08-20 16:16 – Updated: 2026-08-20 17:14
    VLAI
    Title
    Monkeytype: Rate-limit and anti-brute-force controls bypassable via spoofed HTTP headers (forgotPasswordEmail/verificationEmail mail bombing and badAuth bypass)
    Summary
    Monkeytype is a minimalistic and customizable typing test. In 26.26.0 and earlier, the backend rate-limit key generator in backend/src/middlewares/rate-limit.ts uses client-controlled cf-connecting-ip and x-forwarded-for headers before the trust-proxy-derived req.ip value. An unauthenticated attacker can rotate either header to create a new bucket for each request, bypassing rootRateLimiter, badAuthRateLimiter, getKey(), and the getKeyWithUid() fallback used by public endpoints. This permits repeated POST /users/forgotPasswordEmail and verificationEmail requests, mail bombing registered users, consuming Firebase or SMTP quota, evading brute-force protection, and enabling resource exhaustion. Exploitability of cf-connecting-ip depends on deployment topology, but x-forwarded-for and direct-to-origin paths remain affected when those values are not overwritten by a trusted proxy. No fixed version is available as of this review.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-20 17:13 UTC
    CWE
    • CWE-290 - Authentication Bypass by Spoofing
    • CWE-307 - Improper Restriction of Excessive Authentication Attempts
    • CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
    References
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: <= 26.26.0
    Create a notification for this product.
    Show details on NVD website

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    CVE-2025-66563 (GCVE-0-2025-66563)

    Vulnerability from nvd – Published: 2025-12-04 22:34 – Updated: 2025-12-05 14:59
    VLAI
    Title
    Monkeytype vulnerable to stored XSS in approve quotes page
    Summary
    Monkeytype is a minimalistic and customizable typing test. In 25.49.0 and earlier, there is improper handling of user input which allows an attacker to execute malicious javascript on anyone viewing a malicious quote submission. quote.text and quote.source are user input, and they're inserted straight into the DOM. If they contain HTML tags, they will be rendered (after some escaping using quotes and textarea tags).
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-12-05 14:59 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    References
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: <= 25.49.0
    Create a notification for this product.
    Show details on NVD website

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    CVE-2025-59838 (GCVE-0-2025-59838)

    Vulnerability from nvd – Published: 2025-09-25 14:52 – Updated: 2025-10-28 15:22
    VLAI
    Title
    Monkeytype Vulnerable to Self-XSS on loading saved custom text
    Summary
    Monkeytype is a minimalistic and customizable typing test. In versions 25.36.0 and prior, improper handling of user input when loading a saved custom text results in XSS. This issue has been fixed in version 25.44.0.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-09-25 15:44 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: < 25.44.0
    Create a notification for this product.
    Show details on NVD website

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    CVE-2024-41127 (GCVE-0-2024-41127)

    Vulnerability from nvd – Published: 2024-08-02 14:46 – Updated: 2024-08-02 16:52
    VLAI
    Title
    Monkeytype is vulnerable to Poisoned Pipeline Execution through Code Injection in its `ci-failure-comment.yml` GitHub Workflow, enabling attackers to gain `pull-requests` write access.
    Summary
    Monkeytype is a minimalistic and customizable typing test. Monkeytype is vulnerable to Poisoned Pipeline Execution through Code Injection in its ci-failure-comment.yml GitHub Workflow, enabling attackers to gain pull-requests write access. The ci-failure-comment.yml workflow is triggered when the Monkey CI workflow completes. When it runs, it will download an artifact uploaded by the triggering workflow and assign the contents of ./pr_num/pr_num.txt artifact to the steps.pr_num_reader.outputs.content WorkFlow variable. It is not validated that the variable is actually a number and later it is interpolated into a JS script allowing an attacker to change the code to be executed. This issue leads to pull-requests write access. This vulnerability is fixed in 24.30.0.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-08-02 16:48 UTC
    CWE
    • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: < 24.30.0
    Create a notification for this product.
    monkeytype monkeytype Affected: 0 , < 24.30.0 (custom)
        cpe:2.3:a:monkeytype:monkeytype:*:*:*:*:*:*:*:*
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-69183 (GCVE-0-2026-69183)

    Vulnerability from cvelistv5 – Published: 2026-08-20 16:16 – Updated: 2026-08-20 17:14
    VLAI
    Title
    Monkeytype: Rate-limit and anti-brute-force controls bypassable via spoofed HTTP headers (forgotPasswordEmail/verificationEmail mail bombing and badAuth bypass)
    Summary
    Monkeytype is a minimalistic and customizable typing test. In 26.26.0 and earlier, the backend rate-limit key generator in backend/src/middlewares/rate-limit.ts uses client-controlled cf-connecting-ip and x-forwarded-for headers before the trust-proxy-derived req.ip value. An unauthenticated attacker can rotate either header to create a new bucket for each request, bypassing rootRateLimiter, badAuthRateLimiter, getKey(), and the getKeyWithUid() fallback used by public endpoints. This permits repeated POST /users/forgotPasswordEmail and verificationEmail requests, mail bombing registered users, consuming Firebase or SMTP quota, evading brute-force protection, and enabling resource exhaustion. Exploitability of cf-connecting-ip depends on deployment topology, but x-forwarded-for and direct-to-origin paths remain affected when those values are not overwritten by a trusted proxy. No fixed version is available as of this review.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-20 17:13 UTC
    CWE
    • CWE-290 - Authentication Bypass by Spoofing
    • CWE-307 - Improper Restriction of Excessive Authentication Attempts
    • CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
    References
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: <= 26.26.0
    Create a notification for this product.
    Show details on NVD website

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    CVE-2025-66563 (GCVE-0-2025-66563)

    Vulnerability from cvelistv5 – Published: 2025-12-04 22:34 – Updated: 2025-12-05 14:59
    VLAI
    Title
    Monkeytype vulnerable to stored XSS in approve quotes page
    Summary
    Monkeytype is a minimalistic and customizable typing test. In 25.49.0 and earlier, there is improper handling of user input which allows an attacker to execute malicious javascript on anyone viewing a malicious quote submission. quote.text and quote.source are user input, and they're inserted straight into the DOM. If they contain HTML tags, they will be rendered (after some escaping using quotes and textarea tags).
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-12-05 14:59 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    References
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: <= 25.49.0
    Create a notification for this product.
    Show details on NVD website

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    CVE-2025-59838 (GCVE-0-2025-59838)

    Vulnerability from cvelistv5 – Published: 2025-09-25 14:52 – Updated: 2025-10-28 15:22
    VLAI
    Title
    Monkeytype Vulnerable to Self-XSS on loading saved custom text
    Summary
    Monkeytype is a minimalistic and customizable typing test. In versions 25.36.0 and prior, improper handling of user input when loading a saved custom text results in XSS. This issue has been fixed in version 25.44.0.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-09-25 15:44 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: < 25.44.0
    Create a notification for this product.
    Show details on NVD website

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    CVE-2024-41127 (GCVE-0-2024-41127)

    Vulnerability from cvelistv5 – Published: 2024-08-02 14:46 – Updated: 2024-08-02 16:52
    VLAI
    Title
    Monkeytype is vulnerable to Poisoned Pipeline Execution through Code Injection in its `ci-failure-comment.yml` GitHub Workflow, enabling attackers to gain `pull-requests` write access.
    Summary
    Monkeytype is a minimalistic and customizable typing test. Monkeytype is vulnerable to Poisoned Pipeline Execution through Code Injection in its ci-failure-comment.yml GitHub Workflow, enabling attackers to gain pull-requests write access. The ci-failure-comment.yml workflow is triggered when the Monkey CI workflow completes. When it runs, it will download an artifact uploaded by the triggering workflow and assign the contents of ./pr_num/pr_num.txt artifact to the steps.pr_num_reader.outputs.content WorkFlow variable. It is not validated that the variable is actually a number and later it is interpolated into a JS script allowing an attacker to change the code to be executed. This issue leads to pull-requests write access. This vulnerability is fixed in 24.30.0.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-08-02 16:48 UTC
    CWE
    • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
    Impacted products
    Vendor Product Version
    monkeytypegame monkeytype Affected: < 24.30.0
    Create a notification for this product.
    monkeytype monkeytype Affected: 0 , < 24.30.0 (custom)
        cpe:2.3:a:monkeytype:monkeytype:*:*:*:*:*:*:*:*
    Create a notification for this product.
    Show details on NVD website

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              "name": "https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-wcjf-5464-4wq9",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-wcjf-5464-4wq9"
            },
            {
              "name": "https://github.com/monkeytypegame/monkeytype/commit/29627fd0d5f152e2da59671987090ea0a5c29874",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/monkeytypegame/monkeytype/commit/29627fd0d5f152e2da59671987090ea0a5c29874"
            },
            {
              "name": "https://securitylab.github.com/advisories/GHSL-2024-167_monkeytype",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://securitylab.github.com/advisories/GHSL-2024-167_monkeytype"
            }
          ],
          "source": {
            "advisory": "GHSA-wcjf-5464-4wq9",
            "discovery": "UNKNOWN"
          },
          "title": "Monkeytype is vulnerable to Poisoned Pipeline Execution through Code Injection in its `ci-failure-comment.yml` GitHub Workflow, enabling attackers to gain `pull-requests` write access."
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2024-41127",
        "datePublished": "2024-08-02T14:46:21.941Z",
        "dateReserved": "2024-07-15T15:53:28.323Z",
        "dateUpdated": "2024-08-02T16:52:08.440Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }