CVE-2020-7761 Regular Expression Denial of Service (ReDoS)
Attackers can cause a denial of service by submitting crafted invalid emails to applications using this JavaScript validation library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-7761?
CVE-2020-7761 is a medium-severity denial of service vulnerability in @absolunet/kafe, published on 5 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects the package @absolunet/kafe before 3.2.10. It allows cause a denial of service when validating crafted invalid emails.
Which versions are affected by CVE-2020-7761?
2 open source packages ship an affected version, including @absolunet/kafe. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@absolunet/kafe npm | All versions | 3.2.10 |
@absolunet/kafe npm | All versions | 3.2.10 |
Products include Absolunet Kafe.
How do I fix CVE-2020-7761?
Upgrade @absolunet/kafe to 3.2.10 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-7761 being exploited?
There is no known exploitation of CVE-2020-7761 in the wild and no public exploit code.
Sources
Also known as GHSA-hgpf-97c5-74fc, SNYK-JS-ABSOLUNETKAFE-1017403.