CVE-2026-15895 json
OS command injection in jsii-diff in AWS jsii
published 2026-07-15 3 mo ago modified 2026-10-24 15 d ago also GHSA-wcx4-wpfv-mc5c , EUVD-2026-44768
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.
To mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.4 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.4 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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:X/V:X/RE:X/U:X |
| GitHub | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | jsii-diff | <1.131.0 |
1.131.0 |
Affected products
- AWS jsii
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/aws/jsii/releases/tag/v1.131.0
release-notes, patch, web
-
aws.amazon.com
/security/security-bulletins/2026-057-aws/
vendor-advisory
-
github.com
/aws/jsii/security/advisories/GHSA-wcx4-wpfv-mc5c
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-15895
advisory
-
aws.amazon.com
/security/security-bulletins/2026-057-aws
web
-
github.com
/aws/jsii
package
Sources
- CVE List CVE-2026-15895
- GitHub Advisory GHSA-wcx4-wpfv-mc5c
- NVD CVE-2026-15895
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.