SUSE SUSE Rancher Fleet up to 0.12.14/0.13.10/0.14.5/0.15.1 denial of service

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2$0-$5k2.97+

Summaryinfo

A vulnerability classified as critical was found in SUSE SUSE Rancher Fleet up to 0.12.14/0.13.10/0.14.5/0.15.1. The impacted element is an unknown function. Such manipulation leads to denial of service. This vulnerability is referenced as CVE-2026-44937. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in SUSE SUSE Rancher Fleet up to 0.12.14/0.13.10/0.14.5/0.15.1. It has been rated as critical. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is integrity, and availability. CVE summarizes:

Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-44937 since 05/08/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/06/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 0.12.15, 0.13.11, 0.14.6 or 0.15.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-41867). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: SUSE Rancher Fleet 0.12.15/0.13.11/0.14.6/0.15.2

Timelineinfo

05/08/2026 CVE reserved
07/06/2026 +59 days Advisory disclosed
07/06/2026 +0 days VulDB entry created
07/06/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: suse.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-44937 (🔒)
GCVE (CVE): GCVE-0-2026-44937
GCVE (VulDB): GCVE-100-376460
EUVD: 🔒

Entryinfo

Created: 07/06/2026 15:24
Updated: 07/06/2026 17:36
Changes: 07/06/2026 15:24 (52), 07/06/2026 17:36 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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