CVE-2020-35740 HGiga MailSherlock - XSS -1

High 7.0 Published 31 Dec 2020 Updated 16 Sep 2024

Attackers can inject JavaScript via URL parameters in HGiga MailSherlock, potentially leading to session hijacking or malicious actions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-35740?

CVE-2020-35740 is a high-severity cross-site scripting vulnerability in HGiga MailSherlock MSR45/SSR45, published on 31 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HGiga MailSherlock does not validate specific URL parameters properly that allows attackers to inject JavaScript syntax for XSS attacks.

Weakness: CWE-79

Which versions are affected by CVE-2020-35740?

It affects 4 products.

Products include Hgiga Msr45 Isherlock-Antispam, Hgiga Msr45 Isherlock-User, Hgiga Ssr45 Isherlock-Antispam, Hgiga Ssr45 Isherlock-User.

How do I fix CVE-2020-35740?

No fix has been published for CVE-2020-35740 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-2020-35740 being exploited?

There is no known exploitation of CVE-2020-35740 in the wild and no public exploit code.

Sources

Also known as GHSA-r2gc-8vh7-8256.