CVE-2026-24127Public exploitNetwork attack vectorHinoki check available

Reflected XSS via unencoded login username

Published Jan 23, 2026 · Updated Jan 23, 2026

Reflected XSS in Typemill 2.19.1 and earlier allows remote attackers to execute script in the login-page context via a crafted username. On failed authentication, login.twig inserts the submitted username into an HTML attribute without contextual encoding. Exploitation requires user interaction with attacker-controlled login content, enabling script execution with that page's browser privileges.

CVSS severity5.4
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Reflected XSS in Typemill 2.19.1 and earlier allows remote attackers to execute script in the login-page context via a crafted username. On failed authentication, login.twig inserts the submitted username into an HTML attribute without contextual encoding. Exploitation requires user interaction with attacker-controlled login content, enabling script execution with that page's browser privileges.

The record

CVE
CVE-2026-24127
Published
Jan 23, 2026
Updated
Jan 23, 2026
Vendor
Typemill
Product
Typemill
Classifications
CWE-116, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< v2.19.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Typemill · Typemillversion=< v2.19.2

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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