CVE-2019-6283
CVE-2019-6283 is a medium-severity vulnerability in Sass-lang Libsass with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Sass-lang Libsass
- Published:
- Last modified:
Description
In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::parenthese_scope in prelexer.hpp.
Frequently asked questions
- What is CVE-2019-6283?
- In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::parenthese_scope in prelexer.hpp.
- How severe is CVE-2019-6283?
- CVE-2019-6283 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-6283 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-6283?
- CVE-2019-6283 affects Sass-lang Libsass. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-6283?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-6283 published?
- CVE-2019-6283 was published on 2019-01-14 and last updated on 2026-06-17.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
- https://github.com/sass/libsass/issues/2814
Affected products (1)
- cpe:2.3:a:sass-lang:libsass:3.5.5:*:*:*:*:*:*:*
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- CVE-2018-11695 — High (CVSS 8.8): An issue was discovered in LibSass <3.5.3. A NULL pointer dereference was found in the function Sass::Expand::operator…
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