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No exploitation reportedFix available

CVE-2018-11697

No exploitation reported by the sources we read.

  • Published2018-06-04
  • WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::exactly() which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.

Timeline

dates in UTC
  1. 2018-06-0406:29CVE publishedNVD

Versions per branch

NVD
Sass-lang libsass
BranchAffectedFixed in
3.5≤ 3.5.4no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libsassUbuntu:Pro:18.04:LTSall versions · fixed in 3.4.8-1ubuntu0.1~esm1
  • libsassDebian:14all versions · fixed in 3.6.3-1
  • libsassDebian:13all versions · fixed in 3.6.3-1
  • libsassDebian:12all versions · fixed in 3.6.3-1

Vendor advisories

  • CVE-2018-11697 Red Hat Product Security

    libsass: Heap buffer over-read in Sass::Prelexer::exactly in lexer.hpp

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Published
2018-06-04
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-7mp7-9qpg-63p9

Frequently asked questions

What is CVE-2018-11697?

An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::exactly() which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.

Is CVE-2018-11697 actively exploited?

Active exploitation of CVE-2018-11697 has not been confirmed. Its EPSS score was 1.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-11697?

CVE-2018-11697 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

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