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CVE

CVE-2026-75627

Bastillion Authentication Bypass via Path-Prefix Routing Mismatch
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CVE

CVE-2026-75627

Bastillion Authentication Bypass via Path-Prefix Routing Mismatch

Bastillion fails to properly validate request URI paths in its controller dispatcher, allowing unauthenticated attackers to bypass authentication filters by prefixing requests with arbitrary path segments. Attackers can access administrative controllers to read user listings, create manager accounts, and register managed systems, gaining control over SSH access to the managed fleet.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75627.json, https://nvd.nist.gov/vuln/detail/CVE-2026-75627, https://www.vulncheck.com/advisories/bastillion-authentication-bypass-via-path-prefix-routing-mismatch, https://github.com/bastillion-io/Bastillion/issues/669, https://github.com/bastillion-io/Bastillion/commit/d759fb686a1a097b1b026e286fd9b20e5ba349c8, https://github.com/bastillion-io/Bastillion, https://github.com/bastillion-io/Bastillion/blob/master/src/main/java/loophole/mvc/base/BaseKontroller.java

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00443%
EPSS Percentile
0.36794%
Introduced Version
0
Fix Available
d759fb686a1a097b1b026e286fd9b20e5ba349c8

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