CVE-2021-39362 Cross-site scripting in n/a
Attackers controlling captcha solver servers can inject malicious HTML into the DOM, allowing full browser control over users of the ReCaptcha Solver library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-39362?
CVE-2021-39362 is a medium-severity cross-site scripting vulnerability in n/a, published on 22 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2021-39362?
It affects 1 product.
Products include Recaptcha Solver Project Recaptcha Solver.
How do I fix CVE-2021-39362?
No fix has been published for CVE-2021-39362 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-39362 being exploited?
There is no known exploitation of CVE-2021-39362 in the wild and no public exploit code.
Sources
Also known as GHSA-j39q-gqrr-xv8m.