Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.5 | High | 4.0 | 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 | CNA (AMZN) |
- CISA KEV Not listed.
- EPSS 0.0019, the 8th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
- GitHub Advisory Database: GHSA-6v3r-4p5c-mrp5
- OSV: GHSA-6v3r-4p5c-mrp5
- github.com/aws/language-servers/security/advisories/GHSA-6v3r-4p5c-mrp5
- nvd.nist.gov/vuln/detail/CVE-2026-12958
- github.com/Amazon-Q-Developer/language-servers/pull/2742
- github.com/Amazon-Q-Developer/language-servers/commit/6c279b083cc192aa5df1f38c2c185576fd5234f5
- aws.amazon.com/security/security-bulletins/2026-047-aws
- github.com/Amazon-Q-Developer/language-servers/releases/tag/agentic-rc-1.69.0
- github.com/Amazon-Q-Developer/language-servers/releases/tag/lsp-codewhisperer/v0.0.117
- github.com/aws/language-servers