CVE-2022-43357

Name: CVE-2022-43357
Creator: NVD / NIST
Published: 2023-08-22T19:16:29.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.25%

Last modified Jun 17, 2026

CVE-2022-43357 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Stack overflow vulnerability in ast_selectors.cpp in function Sass::CompoundSelector::has_real_parent_ref in libsass:3.6.5-8-g210218, which can be exploited by attackers to causea denial of service (DoS). Also affects the command line driver for libsass, sassc 3.6.2.. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

Stack overflow vulnerability in ast_selectors.cpp in function Sass::CompoundSelector::has_real_parent_ref in libsass:3.6.5-8-g210218, which can be exploited by attackers to causea denial of service (DoS). Also affects the command line driver for libsass, sassc 3.6.2.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.25%

65.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Sass-Lang	Libsass	3.6.5-8-g210218
Sass-Lang	Sassc	3.6.2

References

https://drive.google.com/file/d/1aC5q3czen0atI91fuBIoCBFkS30_OSWX/Exploit, Permissions Required, Third Party Advisory
https://github.com/sass/libsassProduct
https://github.com/sass/libsass/issues/3177Exploit, Issue Tracking, Vendor Advisory
https://drive.google.com/file/d/1aC5q3czen0atI91fuBIoCBFkS30_OSWX/Exploit, Permissions Required, Third Party Advisory
https://github.com/sass/libsassProduct
https://github.com/sass/libsass/issues/3177Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Aug 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-43357?

How severe is CVE-2022-43357?

CVE-2022-43357 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.

How do I fix CVE-2022-43357?

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.

Are you affected by CVE-2022-43357?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST