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CVE-2026-54005· NVD / CVE Program· CNA GitHub_M

Kirby: `pages.access` permission is not checked in the `site/find` REST API route

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites where a role has the pages.access permission disabled allowed authenticated users who know or guess page IDs or UUIDs to retrieve page information, including full content and metadata, for arbitrary published pages through the /api/site/find route without authorization to access those pages. This issue is fixed in versions 4.9.4 and 5.4.4.

HighCVSS 7.1 · v4.0—No exploit Fix available

Noroxi analysis

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Published
Jul 9, 2026
Updated
Jul 14, 2026
EPSS
0.4% · 35th percentile
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Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
7.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • getkirby kirby

    • < 4.9.4, >= 5.0.0, < 5.4.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistgetkirby/cmsfrom 5.0.0-alpha.1 · before 5.4.45.4.4
Packagistgetkirby/cmsbefore 4.9.44.9.4

Same product

getkirby: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-38490Kirby XML External Entity (XXE) vulnerability in the XML data handler
    41Plan
  • CVE-2026-44177Kirby: Pre-authentication path traversal and PHP file inclusion during user lookup
    36Monitor
  • CVE-2026-54003Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header
    36Monitor
  • CVE-2020-26255PHP Phar archives could be uploaded and executed in Kirby
    36Monitor
  • CVE-2024-26483An arbitrary file upload vulnerability in the Profile Image module of Kirby CMS v4.1.0 allows attackers to execute arbitrary code via a craf
    35Monitor
  • CVE-2023-38488Kirby vulnerable to field injection in the KirbyData text storage handler
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Packagist:getkirby/cms4.9.4Package registry (OSV)
Packagist:getkirby/cms5.4.4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-7141553 days apartKirby: File upload permissions are not checked during processing of chunk data
    28Monitor
  • CVE-2026-4206961 days apartKirby: Read access to site, user and role information is not gated by permissions
    28Monitor
  • CVE-2026-4213761 days apartKirby: `pages.access/list` and `files.access/list` permissions are not consistently checked in the REST API and changes dialog
    28Monitor
  • CVE-2026-540040 days apartKirby: Access to files of top-level drafts is not protected by permissions
    25Monitor
  • CVE-2026-441767 days apartKirby: `pages.access` permission is not checked during rendering of page drafts
    24Monitor
  • CVE-2026-492740 days apartKirby: `pages.access` permission is not checked in the pages picker for parent pages
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

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References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records