Git up to 2.26.0 Credential Helper HTTP Request Credentials input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Git up to 2.26.0. Affected by this vulnerability is an unknown functionality of the component Credential Helper. The manipulation as part of HTTP Request leads to input validation (Credentials). This vulnerability is documented as CVE-2020-5260. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Git up to 2.26.0 (Versioning Software) and classified as problematic. This issue affects some unknown processing of the component Credential Helper. The manipulation as part of a HTTP Request leads to a input validation vulnerability (Credentials). Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality. The summary by CVE is:

Affected versions of Git have a vulnerability whereby Git can be tricked into sending private credentials to a host controlled by an attacker. Git uses external "credential helper" programs to store and retrieve passwords or other credentials from secure storage provided by the operating system. Specially-crafted URLs that contain an encoded newline can inject unintended values into the credential helper protocol stream, causing the credential helper to retrieve the password for one server (e.g., good.example.com) for an HTTP request being made to another server (e.g., evil.example.com), resulting in credentials for the former being sent to the latter. There are no restrictions on the relationship between the two, meaning that an attacker can craft a URL that will present stored credentials for any host to a host of their choosing. The vulnerability can be triggered by feeding a malicious URL to git clone. However, the affected URLs look rather suspicious; the likely vector would be through systems which automatically clone URLs not visible to the user, such as Git submodules, or package systems built around Git. The problem has been patched in the versions published on April 14th, 2020, going back to v2.17.x. Anyone wishing to backport the change further can do so by applying commit 9a6bbee (the full release includes extra checks for git fsck, but that commit is sufficient to protect clients against the vulnerability). The patched versions are: 2.17.4, 2.18.3, 2.19.4, 2.20.3, 2.21.2, 2.22.3, 2.23.2, 2.24.2, 2.25.3, 2.26.1.

The weakness was released 04/14/2020 (Website). It is possible to read the advisory at debian.org. The identification of this vulnerability is CVE-2020-5260 since 01/02/2020. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available.

The exploit is available at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 214491 (CBL Mariner 2.0 Security Update: git (CVE-2024-52006)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.17.4, 2.18.3, 2.19.4, 2.20.3, 2.21.2, 2.22.3, 2.23.2, 2.24.2, 2.25.3 or 2.26.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (214491) and CERT Bund (WID-SEC-2025-1905). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • IBM QRadar SIEM

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 4.7
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.3
NVD Vector: 🔍

CNA Base Score: 9.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Credentials
Class: Input validation / Credentials
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214491
Nessus Name: CBL Mariner 2.0 Security Update: git (CVE-2024-52006)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Git 2.17.4/2.18.3/2.19.4/2.20.3/2.21.2/2.22.3/2.23.2/2.24.2/2.25.3/2.26.1
Patch: github.com

Timelineinfo

01/02/2020 🔍
04/14/2020 +103 days 🔍
04/15/2020 +1 days 🔍
08/27/2025 +1959 days 🔍

Sourcesinfo

Product: github.com

Advisory: 157250
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-5260 (🔍)
GCVE (CVE): GCVE-0-2020-5260
GCVE (VulDB): GCVE-100-153131
CERT Bund: WID-SEC-2025-1905 - IBM QRadar SIEM Komponente: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/15/2020 08:18
Updated: 08/27/2025 01:24
Changes: 04/15/2020 08:18 (41), 04/15/2020 08:23 (12), 05/19/2024 07:59 (18), 05/19/2024 08:06 (20), 07/02/2024 09:42 (10), 01/23/2025 00:04 (5), 05/09/2025 08:01 (3), 08/27/2025 01:24 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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