HIGH
There is a stack consumption vulnerability in the lex function in parser.hpp (as used in sassc) in LibSass 3.4.5
Published Jul 23, 2017
7.5
HIGHCVSS 3.0
EPSS 1.88%
Description
There is a stack consumption vulnerability in the lex function in parser.hpp (as used in sassc) in LibSass 3.4.5. A crafted input will lead to a remote denial of service.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.88% 0.01879
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01879
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.88% (0.01879) | 78.70th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.88% (0.01879) | 78.50th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.24% (0.00235) | 62.03th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.24% (0.00235) | 60.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00178) | 53.18th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.98% (0.00976) | 26.54th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.98% (0.00976) | 0.00th | v1 |
Weaknesses (1)
References (2)
- https://bugzilla.redhat.com/show_bug.cgi?id=1471780 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://github.com/sass/libsass/issues/2445 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1471780 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://github.com/sass/libsass/issues/2445 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 23, 2017
Updated Aug 5, 2024
Reserved Jul 22, 2017
Link CVE-2017-11554
CISA Vulnrichment
Updated n/a