Lektor through 3.3.14 and 3.4.0b15 contains an absolute path traversal vulnerability in the admin API on Windows that allows attackers to escape the project directory by supplying drive-letter paths that cleanup_path does not normalise. Attackers can use a malicious web page with cross-site requests or DNS rebinding against the unauthenticated local server to recursively delete directories via deleterecord or write attacker-controlled files via newattachment.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
lektor lektor unaffected
Version Status Constraints
0 affected ≤ 3.3.14
3.4.0b1 affected ≤ 3.4.0b15

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/lektor/lektor cve-icon cve-icon
https://github.com/lektor/lektor/blob/v3.3.14/lektor/db.py#L1334-L1336 cve-icon cve-icon
https://github.com/lektor/lektor/blob/v3.3.14/lektor/utils.py#L83-L94 cve-icon cve-icon
https://github.com/lektor/lektor/issues/1301 cve-icon cve-icon
https://github.com/lektor/lektor/pull/1288 cve-icon cve-icon
https://github.com/lektor/lektor/pull/1302 cve-icon cve-icon
https://www.vulncheck.com/advisories/lektor-through-3.3.14-and-3.4-0b15-path-traversal-via-admin-api-drive-letter-paths cve-icon cve-icon
History

Fri, 06 Nov 2026 15:15:00 +0000

Type Values Removed Values Added
Description Lektor through 3.3.14 and 3.4.0b15 contains an absolute path traversal vulnerability in the admin API on Windows that allows attackers to escape the project directory by supplying drive-letter paths that cleanup_path does not normalise. Attackers can use a malicious web page with cross-site requests or DNS rebinding against the unauthenticated local server to recursively delete directories via deleterecord or write attacker-controlled files via newattachment.
Title Lektor through 3.3.14 and 3.4.0b15 Path Traversal via Admin API Drive-Letter Paths
Weaknesses CWE-36
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-06T17:07:51.308Z

Reserved: 2026-11-06T01:04:42.201Z

Link: CVE-2026-123619

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-06T15:17:19.363

Modified: 2026-11-06T17:17:20.627

Link: CVE-2026-123619

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T16:45:05Z

Weaknesses