8.5

CVE-2026-12958: amazon web services language servers for aws UNIX Symbolic Link (Symlink) Following

CVSS: 8.5v4.0HighAwaiting analysis
AliasesGHSA-6v3r-4p5c-mrp5
Published 23-06-2026Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2026-12958 is a high (CVSS 8.5) UNIX Symbolic Link (Symlink) Following vulnerability in amazon web services language servers for aws. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.2% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.5/10
010
High · v4.0 (CVE.org)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-06-2026
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

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 metrics

6 scores · 3 sources · 2 versions

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@aws1 product
  • lsp-codewhisperer< 0.0.117
Amazon web services1 product

2 vendors · 2 products

References

9 links