CVE-2021-38384 json
Incorrect Authorization in serverless-offline
published 2021-08-10 5 y ago modified 2026-06-17 4 mo ago also GHSA-h97f-5258-5593 , EUVD-2021-2069
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
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).
Exploit prediction
1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/dherault/serverless-offline/issues/1259 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | serverless-offline | <=8.0.0 |
no fix listed |
Classification
References
-
github.com
/dherault/serverless-offline/issues/1259
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-38384
advisory
-
github.com
/dherault/serverless-offline
package
Sources
- CVE List CVE-2021-38384
- GitHub Advisory GHSA-h97f-5258-5593
- NVD CVE-2021-38384
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