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CVE-2026-44937— SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components

Quick assessment

Affected
SUSE Rancher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rancher Fleet是Rancher公司的一款容器集群监控与管理平台。 Rancher Fleet存在服务端请求伪造漏洞，该漏洞源于使用未认证的Webhook时可能导致Webhook请求伪造，远程攻击者可利用此漏洞造成拒绝服务或对其他存储库进行降级攻击。以下版本受到影响：0.15.2版本之前的0.15.x版本、0.14.6版本之前的0.14.x版本、0.13.11版本之前的0.13.x版本和0.12.5版本之前的0.12.x版本。

AI Predicted 7.5 Difficulty: Easy EPSS 0.42% · P35

Affected Version Matrix 4

VendorProduct Version RangeStatus
SUSE Rancher 0.15.0< 0.15.2 affected
0.14.0< 0.14.6 affected
0.13.0< 0.13.11 affected
0.12.0< 0.12.15 affected
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I. Basic Information for CVE-2026-44937

Vulnerability Information
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Vulnerability Title
SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Rancher Fleet 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rancher Fleet是Rancher公司的一款容器集群监控与管理平台。 Rancher Fleet存在服务端请求伪造漏洞，该漏洞源于使用未认证的Webhook时可能导致Webhook请求伪造，远程攻击者可利用此漏洞造成拒绝服务或对其他存储库进行降级攻击。以下版本受到影响：0.15.2版本之前的0.15.x版本、0.14.6版本之前的0.14.x版本、0.13.11版本之前的0.13.x版本和0.12.5版本之前的0.12.x版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE Rancher 0.15.0 ~ 0.15.2 -

II. Public POCs for CVE-2026-44937

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III. Intelligence Information for CVE-2026-44937

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Vendor Advisories for CVE-2026-44937 (1)

Same Patch Batch · SUSE · 2026-07-06 · 3 CVEs total

CVE-2026-44936 5.0 MEDIUM Rancher Fleet SSRF in Bundle Reader via Unvalidated Helm Repository URL in fleet.yaml
CVE-2026-44934 Exposed tokens in SUSE Rancher AI Agent logs

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-918

V. Comments for CVE-2026-44937

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