CVE-2026-53468Network attack vector

Stored XSS via unencoded Open Graph metadata

Published Aug 21, 2026 · Updated Aug 21, 2026

Stored XSS in Typemill before 2.23.0 allows remote authenticated users to inject HTML attributes through page metadata. The page renderer inserts attacker-controlled og:title and og:description values into generated meta-tag attributes without output encoding. Exploitation requires permission to modify page metadata and a browser or DOM interaction that interprets the injected attributes, enabling script execution in the site context.

CVSS severity4.6
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Typemill before 2.23.0 allows remote authenticated users to inject HTML attributes through page metadata. The page renderer inserts attacker-controlled og:title and og:description values into generated meta-tag attributes without output encoding. Exploitation requires permission to modify page metadata and a browser or DOM interaction that interprets the injected attributes, enabling script execution in the site context.

The record

CVE
CVE-2026-53468
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Typemill
Product
Typemill
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=< 2.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Typemill · Typemillversion=< 2.23.0

Published CVSS scores

4.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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