Open-Source Security Intelligence

Know every vulnerability
before it knows you.

DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.

Checkout DevGuardView on GitHub
Search

GHSA-w836-5gpm-7r93

MediumCVSS 4.6 / 10
Published Jan 21, 2026·Last modified Feb 3, 2026
Affected Components(0)

No affected components available

Description

Summary

Reflected XSS in /api/icon/getDynamicIcon due to unsanitized SVG input.

Details

The endpoint generates SVG images for text icons (type=8). The content query parameter is inserted directly into the SVG <text> tag without XML escaping. Since the response Content-Type is image/svg+xml, injecting unescaped tags allows breaking the XML structure and executing JavaScript.

PoC

Payload: test</text><script>alert(window.origin)</script><text>

  1. Open any note and click Change Icon -> Dynamic (Text).

    <img width="713" height="373" alt="image" src="https://github.com/user-attachments/assets/8a4f5ec4-81d6-46cb-8872-841cb2188ed8" />

  2. Change color and paste the payload into the Custom field and click on this icon.

    <img width="935" height="682" alt="image" src="https://github.com/user-attachments/assets/24d28fbd-a3ce-44f1-a5bb-2cc3f711faf5" />

  3. Intercept and send the request or get path from devtools

    <img width="1229" height="627" alt="image" src="https://github.com/user-attachments/assets/3cfb1d9a-5a23-476c-86cc-f9a7de6bbe32" />
<img width="1140" height="764" alt="image" src="https://github.com/user-attachments/assets/2657e44f-3724-4136-a53f-75068945aef0" />
  1. The JavaScript payload executes afted open URL. <img width="701" height="809" alt="image" src="https://github.com/user-attachments/assets/343ad67a-e236-466b-9ec9-e4f1dea4fd5e" />
<img width="1382" height="847" alt="image" src="https://github.com/user-attachments/assets/01820d3c-c374-402a-8d72-6ea75dbd92c2" />

Impact

Arbitrary JavaScript execution in the user's session context if the SVG is loaded directly. It also prevents using legitimate characters like < or > in icon text.

Note

Tested version: <img width="1368" height="699" alt="image" src="https://github.com/user-attachments/assets/a7466b8f-a88b-461d-8d9e-7178af7ab076" />

Risk Scores
Base Score
4.6

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
4.2

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.26%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities

Browse More

Medium severity
Scan your project

Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.

Checkout DevGuard