CVE-2026-23653: microsoft github_copilot_chat Command Injection
CVSS: 6.5v3.1MediumAnalyzed
Published 14-04-2026Last modified 15-10-2026
Vulnerability summary
CVE-2026-23653 is a medium (CVSS 6.5) Command Injection vulnerability in microsoft github_copilot_chat. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 53.7% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.74%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 14-04-2026PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio Code allows an authorized attacker to disclose information over a network.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NSources2 sources · 5.7–6.5
- CVE.orgCNA5.7MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CDiffers
EPSS trend
Probability
0.74%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
0.00 pp
From 0.74% on 19-09-2026
19-09-202619-10-2026
EPSS score0.74%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft2 products
- github_copilot_chat< 0.37.3
- microsoft visual studio code copilot chat extension≥ 0.27.0, < 0.37.3
1 vendor · 2 products
