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Fencer Vulns
high 7.5

CVE-2022-43358 json

Stack overflow vulnerability in ast_selectors.cpp: in function Sass::ComplexSelector::has_placeholder in libsass:3.6.5-8-g210218, which can…

published 2023-08-22 3 y ago modified 2026-09-08 2 mo ago also BIT-sass-2022-43358 , EUVD-2022-46397

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

Stack overflow vulnerability in ast_selectors.cpp: in function Sass::ComplexSelector::has_placeholder in libsass:3.6.5-8-g210218, which can be exploited by attackers to cause a denial of service (DoS).

Patch / fix

  • bitnami sass 3.6.5
  • libsass Debian 14, Debian 13 3.6.5+20231221-2

debian advisories DEBIAN-CVE-2022-43358

  • libsass SLE Module for Package Hub 15 SP5, SLE Module for Package Hub 15 SP4, openSUSE Leap 15.5 +1 more 3.6.5-150200.4.10.1

suse advisories SUSE-SU-2023:4895-1

  • libsass openSUSE Tumbleweed 3.6.5-2.1

opensuse advisories openSUSE-SU-2024:13516-1

  • libsass Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 3.6.6-r0

alpine advisories ALPINE-CVE-2022-43358

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libsass Azure Linux 3.0 3.6.6-1

azure linux advisories AZL-44817

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-43358 updated cvss 7.5

libsass: stack overflow in Sass::ComplexSelector::has_placeholder() in ast_selectors.cpp

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.52% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/sass/libsass/issues/3178 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami sass
>=3.6.5-8-g210218, <3.6.5
3.6.5

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.