What is the CVSS score of CVE-2026-24127?

CVE-2026-24127 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Typemill are affected by CVE-2026-24127?

Organizations using Typemill should be aware of moderate risk from CVE-2026-24127, a cross-site scripting vulnerability rated CVSS 5.4.. A patch is available.

Is there a public PoC exploit available for CVE-2026-24127?

Yes, a public proof-of-concept exploit is available for CVE-2026-24127. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-24127?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Typemill CVE-2026-24127

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-01-23 security-advisories@github.com

XSS Typemill

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 02, 2026 - 13:32 vuln.today

Public exploit code

Patch released

Feb 02, 2026 - 13:32 nvd

Patch available

CVE Published

Jan 23, 2026 - 23:15 nvd

MEDIUM 5.4

DescriptionGitHub Advisory

Typemill is a flat-file, Markdown-based CMS designed for informational documentation websites. A reflected Cross-Site Scripting (XSS) exists in the login error view template login.twig of versions 2.19.1 and below. The username value can be echoed back without proper contextual encoding when authentication fails. An attacker can execute script in the login page context. This issue has been fixed in version 2.19.2.

AnalysisAI

Reflected XSS in Typemill's login error page allows unauthenticated attackers to inject malicious scripts by crafting requests with specially formatted usernames, since the username parameter lacks proper encoding when displayed after failed authentication attempts. Typemill versions 2.19.1 and below are affected, and public exploit code exists for this vulnerability. Version 2.19.2 contains the fix.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Typemill. Typemill is a flat-file, Markdown-based CMS designed for informational documentation websites. A reflected Cross-Site Scripting (XSS) exists in the login error view template login.twig of versions 2.19.1 and below. The username value can be echoed back without proper contextual encoding when authentication fails. An attacker can execute script in the login page context. This issue has been fixed in version 2.19.2.

RemediationAI

A vendor patch is available — apply it immediately. Fixed in version 2.19.2.. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.