CVE-2018-20821
MEDIUMCVSS 6.5/10EPSS 2.22%
Last modified
CVE-2018-20821 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).. EPSS estimates a 2.22% chance of exploitation in the next 30 days.
Description
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sass-Lang | Libsass | <= 3.5.5 |
References
- https://github.com/sass/libsass/issues/2658Exploit, Patch, Third Party Advisory
- https://github.com/sass/libsass/issues/2658Exploit, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-20821?
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
How severe is CVE-2018-20821?
CVE-2018-20821 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.22% probability of exploitation in the next 30 days.
How do I fix CVE-2018-20821?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2018-20821?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST