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CVE-2026-44937

SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components

HIGH
8.2
CVSS Score
Published: July 6, 2026 at 09:52 AM UTC
Updated: October 25, 2026 at 03:10 PM UTC
2 products affected across 2 vendorsRancher FleetRancher

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Severity
HIGH8.2
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Rancher Fleet· SUSE
95%
0.12.0 ≤ v < 0.12.150.13.0 ≤ v < 0.13.110.14.0 ≤ v < 0.14.60.15.0 ≤ v < 0.15.2
Affected range stops below 0.12.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.13.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.14.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.15.2, so it looks safe — our inference, not a vendor statement
Rancher· Rancher
90%
0.12.0 ≤ v < 0.12.150.13.0 ≤ v < 0.13.110.14.0 ≤ v < 0.14.60.15.0 ≤ v < 0.15.20.12.00.13.00.14.00.15.0
Affected range stops below 0.12.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.13.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.14.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.15.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryMitigation
Source: cverecord
https://github.com/rancher/fleet/security/advisories/GHSA-jmf4-m7j9-g72r

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-918

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