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Vulnerability record · CVE-2026-12958 · published 23 June 2026

CVE-2026-12958: Missing symlink validation in Language Servers for AWS may allow an arbitrary file write outside of the worksp…

Missing symlink validation in Language Servers for AWS may allow an arbitrary file write outside of the workspace trust boundary. This may occur when a local user opens a workspace with a maliciously crafted symlink that resolves to a file path outside the workspace trust boundary. To remediate this issue, users should upgrade to version 1.69.0 or higher.

8.5 CVSS 4.0 High EPSS 0.19% · top 92.1% CWE-61 · CWE-61 Awaiting Analysis
8.5CVSS 4.0 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
23 Jun 2026Last modified by NVD

Description

Missing symlink validation in Language Servers for AWS may allow an arbitrary file write outside of the workspace trust boundary. This may occur when a local user opens a workspace with a maliciously crafted symlink that resolves to a file path outside the workspace trust boundary. To remediate this issue, users should upgrade to version 1.69.0 or higher.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://aws.amazon.com/security/security-bulletins/2026-047-aws/
https://github.com/aws/language-servers/security/advisories/GHSA-6v3r-4p5c-mrp5

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Source: NIST National Vulnerability Database (record CVE-2026-12958), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.