Serverless Offline 8.0.0 returns a 403 HTTP status code for a route that has a trailing /…
Priority MEDIUM 45CWE-755Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
Serverless Offline 8.0.0 returns a 403 HTTP status code for a route that has a trailing / character, which might cause a developer to implement incorrect access control, because the actual behavior within the Amazon AWS environment is a 200 HTTP status code (i.e., possibly greater than expected permissions).
Why it matters now
EPSS 0.0146 73rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | serverless-offline (npm) | up to 8.0.0 | — | No fix listed | GHSA-h97f-5258-5593 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- serverless-offline (npm) Vendor— Affected up to 8.0.0 Fixed in — No fix listed GHSA-h97f-5258-5593
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:serverless_offline_project:serverless_offline:8.0.0:*:*:*:*:*:*:* | 8.0.0 | Vulnerable | Serverless Offline Project |
- cpe:2.3:a:serverless_offline_project:serverless_offline:8.0.0:*:*:*:*:*:*:* Versions 8.0.0 Vulnerable ·Serverless Offline Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38384
- 2026-10-03 Alias added: GHSA-h97f-5258-5593
References
Sources
- CVE-2021-38384 · CVE Program
- CVE-2021-38384 · NVD
- FIRST EPSS
- GHSA-h97f-5258-5593 · GitHub Advisory Database · CC BY 4.0
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