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Kirby CMS CVE-2026-69127

| EUVDEUVD-2026-54577 MEDIUM
Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497)
2026-08-07 GitHub_M GHSA-rf2p-vh74-7vvh
6.9
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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
vuln.today AI
5.3 MEDIUM

Network-reachable, no auth required against default config; impact is path disclosure only, so C:L with no I or A impact and unchanged scope.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Source Code Evidence Fetched
Aug 07, 2026 - 19:18 vuln.today
Analysis Generated
Aug 07, 2026 - 19:18 vuln.today
Patch available
Aug 07, 2026 - 19:02 EUVD

DescriptionCVE.org

Kirby is an open-source content management system. Prior to 4.9.5 and from 5.0.0 through 5.5.1, the REST API error handler can return unsanitized PHP error messages that expose the full filesystem path of the Kirby installation to unauthenticated API users. This vulnerability affects all Kirby sites that have not disabled the REST API with the 'api' => false option. This issue is fixed in versions 4.9.5 and 5.5.2.

AnalysisAI

Kirby CMS's REST API error handler exposes full server filesystem paths to unauthenticated remote users via unsanitized PHP exception messages. Affected are all Kirby installations on versions prior to 4.9.5 (4.x branch) and 5.0.0 through 5.5.1 (5.x branch) where the REST API has not been explicitly disabled. …

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Attack ChainAIDerived

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Access
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the Kirby REST API is active, which is the default configuration - sites that have explicitly added 'api' => false to their Kirby config are not affected. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) confirms unauthenticated, network-accessible exploitation with no attack complexity or user interaction required, reflecting the default-enabled state of the Kirby REST API. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to Kirby 4.9.5 (4.x branch) or Kirby 5.5.2 (5.x branch), both confirmed as fixed versions by the vendor advisory at https://github.com/getkirby/kirby/security/advisories/GHSA-rf2p-vh74-7vvh and by the fix commits at https://github.com/getkirby/kirby/commit/58f819988436b31969078bc4655452dd48546451. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-69127 vulnerability details – vuln.today

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