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CVE-2024-50338

📛 CVE Title

Carriage-return character in remote URL allows malicious repository to leak credentials in Git Credential Manager

⬇ Download JSON ⚠ View as Threat

Description

Git Credential Manager (GCM) is a secure Git credential helper built on .NET that runs on Windows, macOS, and Linux. The Git credential protocol is text-based over standard input/output, and consists of a series of lines of key-value pairs in the format `key=value`. Git's documentation restricts the use of the NUL (`\0`) character and newlines to form part of the keys or values. When Git reads from standard input, it considers both LF and CRLF as newline characters for the credential protocol by virtue of calling `strbuf_getline` that calls to `strbuf_getdelim_strip_crlf`. Git also validates that a newline is not present in the value by checking for the presence of the line-feed character (LF, `\n`), and errors if this is the case. This captures both LF and CRLF-type newlines. Git Credential Manager uses the .NET standard library `StreamReader` class to read the standard input stream line-by-line and parse the `key=value` credential protocol format. The implementation of the `ReadLineAsync` method considers LF, CRLF, and CR as valid line endings. This is means that .NET considers a single CR as a valid newline character, whereas Git does not. This mismatch of newline treatment between Git and GCM means that an attacker can craft a malicious remote URL. When a user clones or otherwise interacts with a malicious repository that requires authentication, the attacker can capture credentials for another Git remote. The attack is also heightened when cloning from repositories with submodules when using the `--recursive` clone option as the user is not able to inspect the submodule remote URLs beforehand. This issue has been patched in version 2.6.1 and all users are advised to upgrade. Users unable to upgrade should only interact with trusted remote repositories, and not clone with `--recursive` to allow inspection of any submodule URLs before cloning those submodules.

Overview

State
PUBLISHED
Assigner (CNA)
GitHub_M
CVSS severity
HIGH
CVSS score
CVSS 7.4 / 10 7.4 7.4 / 10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Effective score
7.4 / 10 HIGH source: CNA overview
MSRC score
7.4 / 10 HIGH MS rating: Important · Information Disclosure
CWE(s)
CWE-200
Reserved
2024-10-22
Published
2025-01-14 19:11 UTC
Last updated
2025-01-14 19:35 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2024/50xxx/CVE-2024-50338.json
Linked Threat
CVE-2024-50338 — Carriage-return character in remote URL allows malicious repository to leak credentials in Git Credential Manager

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2025-0069
Assigner
GitHub_M
Published
Jan 14, 2025, 6:11:23 PM
Updated
Jan 14, 2025, 6:35:33 PM
EUVD base score (CVSS 3.1)
7.4 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
EUVD-reported EPSS
0.2200
Vendors
git-ecosystem
Products
git-credential-manager (< 2.6.1)
Aliases
GHSA-86c2-4x57-wc8g

ENISA description: Git Credential Manager (GCM) is a secure Git credential helper built on .NET that runs on Windows, macOS, and Linux. The Git credential protocol is text-based over standard input/output, and consists of a series of lines of key-value pairs in the format `key=value`. Git's documentation restricts the use of the NUL (`\0`) character and newlines to form part of the keys or values. When Git reads from standard input, it considers both LF and CRLF as newline characters for the credential protocol by virtue of calling `strbuf_getline` that calls to `strbuf_getdelim_strip_crlf`. Git also validates that a newline is not present in the value by checking for the presence of the line-feed character (LF, `\n`), and errors if this is the case. This captures both LF and CRLF-type newlines. Git Credential Manager uses the .NET standard library `StreamReader` class to read the standard input stream line-by-line and parse the `key=value` credential protocol format. The implementation of the `ReadLineAsync` method considers LF, CRLF, and CR as valid line endings. This is means that .NET considers a single CR as a valid newline character, whereas Git does not. This mismatch of newline treatment between Git and GCM means that an attacker can craft a malicious remote URL. When a user clones or otherwise interacts with a malicious repository that requires authentication, the attacker can capture credentials for another Git remote. The attack is also heightened when cloning from repositories with submodules when using the `--recursive` clone option as the user is not able to inspect the submodule remote URLs beforehand. This issue has been patched in version 2.6.1 and all users are advised to upgrade. Users unable to upgrade should only interact with trusted remote repositories, and not clone with `--recursive` to allow inspection of any submodule URLs before cloning those submodules.

EUVD references (8)

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-07-15 03:04 UTC (source: CVRF).

MS severity
Important
Impact
Information Disclosure
MS CVSS base score
7.4 / 10 (temporal 6.4)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
Exploit assessment
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Release
2025-Jan
Microsoft remediations / KB articles (9)
Microsoft FAQ (2)

Why is this GitHub CVE included in the Security Update Guide?

The vulnerability assigned to this CVE is in Git for Windows software which is consumed by Microsoft Visual Studio. It is being documented in the Security Update Guide to announce that the latest builds of Visual Studio are no longer vulnerable. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.

What type of information could be disclosed by this vulnerability?

The type of information that could be disclosed if an attacker successfully exploited this vulnerability is secrets or privileged information belonging to the user of the affected application.

Affected products (1)
VendorProductVersionsPlatforms
git-ecosystem git-credential-manager < 2.6.1 (affected) —

Vendor references (8)

References embedded in the original CVE record by the assigning CNA.

Web references (14)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

Remediations (17)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

  • Patch Smarter, Not Harder - CISA
    web:www.cisa.gov

    The median time for full resolution rose to 43 days. Defenders need greater clarity and speed to patch systems in today's threat landscape. We must flip the script on patching prioritization: patch smarter, not harder.

    2026-08-05 18:28 UTC
  • CVE Record: CVE-2024-50338
    web:www.cve.org

    Description Git Credential Manager (GCM) is a secure Git credential helper built on .NET that runs on Windows, macOS, and Linux. The Git credential protocol is text-based over standard input/output, and consists of a series of lines of key-value pairs in the format `key=value`. Git's documentation restricts the use of the NUL (`\0`) character and newlines to form part of the keys or values ...

    2026-08-05 18:28 UTC
  • Windows 11, version 25H2 known issues and notifications
    web:learn.microsoft.com

    Windows 11, version 25H2 is now available for all eligible devices. Devices running Home and Pro editions of Windows 11 that are not managed by IT departments will receive the update to Windows 11, version 25H2 through the machine learning-based intelligent rollout.

    2026-08-05 18:28 UTC
  • Microsoft Technical Security Notifications
    web:www.microsoft.com

    Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed. You can choose the type of updates for which you want to be notified: Major ...

    2026-08-05 18:28 UTC
  • Security Update Guide - Microsoft Security Response Center
    web:msrc.microsoft.com

    Access Microsoft Security Response Center's guide to address vulnerabilities, manage security risks, and keep your systems protected with the latest updates.

    2026-08-05 18:28 UTC
  • Security Advisories and Bulletins | Microsoft Learn
    web:learn.microsoft.com

    Learning path Learn how Microsoft supports secure software development as part of a cybersecurity solution - Training Secure software development means integrating security into each phase of your development lifecycle, from requirements analysis to maintenance. Microsoft provides many services that can help you develop more secure code and deploy a more secure application in the cloud. This ...

    2026-08-05 18:28 UTC
  • NVD - cve-2024-50338
    web:nvd.nist.gov

    Quick Info CVE Dictionary Entry: CVE-2024-50338 NVD Published Date: 01/14/2025 NVD Last Modified: 06/17/2026 Source: GitHub, Inc.

    2026-08-05 18:28 UTC
  • Microsoft KB Catalog: Updates, Issues, & Feedback - NinjaOne
    web:www.ninjaone.com

    Catalog of Microsoft KB updates with insights on performance & user sentiment. Find out what's working, what's not, & make informed decisions.

    2026-05-22 10:40 UTC
  • Oracle Critical Patch Update Advisory - October 2025
    web:www.oracle.com

    This Critical Patch Update contains 374 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at October 2025 Critical Patch Update: Executive Summary and Analysis.

    2026-05-22 10:40 UTC
  • Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...
    web:cybersecuritynews.com

    Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

    2026-05-22 10:40 UTC
  • Patch Tuesday May 2026: Security Updates & CVE Analysis
    web:zecurit.com

    Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

    2026-05-22 10:40 UTC
  • Nvd - Cve-2024-37338
    web:nvd.nist.gov

    An official website of the United States government NVD MENU

    2026-05-22 10:40 UTC
  • Security Update Guide - Loading - Microsoft
    web:portal.msrc.microsoft.com

    The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

    2026-05-22 10:40 UTC
  • Star Citizen Alpha 4.8 LIVE - Hotfix Central [Updated 5.21]
    web:robertsspaceindustries.com

    Hi Everyone! Time again for another Hotfix Central thread to keep you all up to date on things going on outside of the normal patch cycle in SC Alpha 4.8 LIVE! This will be a living document of...

    2026-05-22 10:40 UTC
  • Google Translate
    web:translate.google.com

    Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages.

    2026-05-22 10:40 UTC
  • WhatsApp Web
    web:web.whatsapp.com

    Log in to WhatsApp Web for simple, reliable and private messaging on your desktop. Send and receive messages and files with ease, all for free.

    2026-05-22 10:40 UTC
  • ArcGIS Server Security 2025 Update 2 Patch - Esri
    web:www.esri.com

    Key highlights The ArcGIS Server Security 2025 update 2 is available This patch resolves 10 Medium severity vulnerabilities This security patch is cumulative, and includes fixes provided in the ArcGIS Server Security 2025 update 1.

    2026-05-22 10:40 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2024-50338.json.

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