CVE-2022-43363 Cross-site scripting in n/a

Medium 6.1 Published 6 Dec 2022 Updated 3 Aug 2024

An attacker can execute arbitrary scripts in Telegram Web via a crafted payload, potentially compromising user accounts.

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-2022-43363?

CVE-2022-43363 is a medium-severity cross-site scripting vulnerability in n/a, published on 6 Dec 2022. 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

Telegram Web 15.3.1 allows XSS via a certain payload derived from a Target Corporation website. NOTE: some third parties have been unable to discern any relationship between the Pastebin information and a possible XSS finding.

Weakness: CWE-79

Which versions are affected by CVE-2022-43363?

It affects 1 product.

Products include Telegram Telegram.

How do I fix CVE-2022-43363?

No fix has been published for CVE-2022-43363 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-2022-43363 being exploited?

There is no known exploitation of CVE-2022-43363 in the wild and no public exploit code.

Sources

Also known as GHSA-vjx6-6r3w-rpqc.