CVE-2026-120218: Typemill vulnerability

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

What it is

A flaw has been found in Typemill up to 2.26.0. The impacted element is the function ControllerApiImage::saveImage of the file system/typemill/Models/SvgSanitizer.php. Executing a manipulation can lead to cross site scripting. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version 2.27.0 is sufficient to resolve this issue. This patch is called 9ca43c4a7b6764c5a6ac11a2ccc099b036ee3cef. It is recommended to upgrade the affected component.

Description quoted from the CVE record (assigned by VulDB, published 2026-11-01).

Weakness: Cross Site Scripting; Code Injection

How it can be exploited

Exploitable over the network with low attack complexity with no special attack requirements needing low privileges and a user must take an action. Impact: confidentiality none, integrity low, availability none. CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: no. Technical impact: partial.

Public exploit evidence (Exploit Observer)

Exploit Observer found 4 code repositories naming this CVE.

Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.

See all 6 references on Exploit Observer

Live scores

EPSS: 0.003
low predicted chance of attack
VEDAS: 0.987
strong exploit evidence
On CISA KEV: Not listed
Detection rule: Suricata

Who is affected

Product	Affected	Not affected
Typemill	version 2.0 version 2.1 version 2.2 version 2.3 version 2.4 version 2.5 version 2.6 version 2.7 and 19 more ranges	2.27.0 is not affected

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

How to fix it

Vendor guidance:

How to detect it

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-120218 Typemill - Stored XSS via SVG sanitizer bypass (image upload). Add them to your Suricata rule set and reload.

Show the rules

suricata

alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-120218 Typemill - Stored XSS via SVG sanitizer bypass (image upload)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/v1/image"; nocase; fast_pattern; http.request_body; content:"svg"; nocase; pcre:"/(?:<\s*svg|xml-stylesheet|<\?xml-stylesheet)/i"; classtype:web-application-attack; reference:cve,CVE-2026-120218; reference:url,https://www.exploit.observer/?keyword=CVE-2026-120218&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=typemill&match=exact; sid:1105208; rev:1;)

CVE-2026-120218.rules on GitHub

References

Vendor advisories and patches

Technical analysis and advisories

VDB-429569 | Typemill SvgSanitizer.php saveImage cross site scripting (vdb-entry, technical-description)
CVE-2026-120218 | CVE Analysis and Report (third-party-advisory)
Submit #992817 | trendschau TypeMill 2.26.0 Stored Cross-Site Scripting / Privilege Escalation (CWE-79) (third-party-advisory)

Other references

VDB-429569 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
https://github.com/typemill/typemill/ (product)

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.