---
title: "CVE-2026-104059: Lektor - Cross-Site Request Forgery"
description: "Lektor 3.3.14 and 3.4.0b15 contain a cross-site request forgery caused by lack of CSRF tokens, Origin/Referer validation, CORS configuration, and Host allowlisting in the admin API blueprint, letting unauthenticated attackers perform state-changing actions and data disclosure via DNS rebinding, exploit requires crafted cross-origin requests."
url: https://panop.io/threat-heartbeat/CVE-2026-104059/
---

# CVE-2026-104059 Lektor - Cross-Site Request Forgery

Lektor 3.3.14 and 3.4.0b15 contain a cross-site request forgery caused by lack of CSRF tokens, Origin/Referer validation, CORS configuration, and Host allowlisting in the admin API blueprint, letting unauthenticated attackers perform state-changing actions and data disclosure via DNS rebinding, exploit requires crafted cross-origin requests.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104059)

## Details

Type

Cross-Site Request Forgery

Impact

Data Tampering, Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Published

1 October 2026

Updated

15 October 2026

Weakness

[CWE-352](https://cwe.mitre.org/data/definitions/352.html)

## Vendor fix

Update to the latest version with CSRF protections and proper validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104059](https://nvd.nist.gov/vuln/detail/CVE-2026-104059)
- [https://gist.github.com/mansurmavlankulov/c7683e3204e84892e442b0196585d5bb](https://gist.github.com/mansurmavlankulov/c7683e3204e84892e442b0196585d5bb)
- [https://www.vulncheck.com/advisories/lektor-csrf-via-admin-api-endpoints](https://www.vulncheck.com/advisories/lektor-csrf-via-admin-api-endpoints)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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