CVE-2018-20822
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).
Does this matter?
Lower severity and a low EPSS score (2.11%). Track it; it rarely justifies an emergency change on its own.
Description
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).
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 2.11% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- sass-lang/libsass
- Source
- cve@mitre.org
EPSS 2.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.htmlBroken Link
- https://github.com/sass/libsass/issues/2671Exploit, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.htmlBroken Link
- https://github.com/sass/libsass/issues/2671Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.