CVE-2026-44937: suse rancher Server-Side Request Forgery (SSRF)
CVSS: 8.3v4.0HighAnalyzed
AliasesGHSA-jmf4-m7j9-g72rGO-2026-5874
Published 06-07-2026Last modified 06-07-2026
Vulnerability summary
CVE-2026-44937 is a high (CVSS 8.3) Server-Side Request Forgery (SSRF) vulnerability in suse rancher. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.2% of scored vulnerabilities.
CVSS score
8.3/10
010
High · v4.0 (CVE.org)EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 06-07-2026PublishedVulnerability first disclosed.
- 06-07-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.3Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:NSourcesAll 2 agree
- NVDNIST8.3HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
High 7.5Preferred score · OSV · Go (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:HSources2 sources · 7.5–8.2
- NVDNIST8.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HDiffers
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
0.00 pp
From 0.42% on 19-09-2026
19-09-202619-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse2 products
- rancher≥ 0.15.0, < 0.15.2 | ≥ 0.14.0, < 0.14.6 | ≥ 0.13.0, < 0.13.11 | ≥ 0.12.0, < 0.12.15
- rancher_fleet≥ 0.12.0, < 0.12.15 | ≥ 0.13.0, < 0.13.11 | ≥ 0.14.0, < 0.14.6 | ≥ 0.15.0, < 0.15.2
Github.com/rancher1 product
- fleet≥ 0.14.0, < 0.14.6 | ≥ 0.13.0, < 0.13.11 | ≥ 0.12.0, < 0.12.15 | ≥ 0.15.0, < 0.15.2
2 vendors · 3 products
References
2 links- github.com/rancher/fleet/security/advisories/GHSA-jmf4-m7j9-g72rVendor AdvisoryWEBAdvisoryMitigation
- github.com/rancher/fleetPACKAGE