LibSass 3.5.4 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Complex_Selector::perform in ast.hpp and Sass::Inspect::operator in inspect.cpp).
CVE-2018-20822
MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence
Score 6.5 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 6.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 2%CVSS: 6.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EPSS
- 79.6%
- KEV
- Not listed
Published
April 23, 2019
Last Modified
November 21, 2024
References (8)
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
- cve@mitrehttps://github.com/sass/libsass/issues/2671
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
- af854a3a-2127-422b-91ae-364da2661108https://github.com/sass/libsass/issues/2671
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2018-20822?
CVE-2018-20822 is a medium vulnerability published on April 23, 2019. LibSass 3.5.4 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Complex_Selector::perform in ast.hpp and Sass::Inspect::operator in inspect.cpp).
When was CVE-2018-20822 disclosed?
CVE-2018-20822 was first published in the National Vulnerability Database on April 23, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-20822 actively exploited?
CVE-2018-20822 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-20822?
CVE-2018-20822 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2018-20822?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20822, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2018-20822
Is Your Infrastructure Affected by CVE-2018-20822?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.