Vulnerable Library - fastapi-0.128.8-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260414115749_FASALT/python_KPPKZR/202604141157501/env/lib/python3.9/site-packages/idna-3.11.dist-info
Vulnerabilities
| Vulnerability |
Severity |
 CVSS |
Exploit Maturity |
EPSS |
Dependency |
Type |
Fixed in (fastapi version) |
Remediation Possible** |
Reachability |
| CVE-2026-48710 |
 Medium |
6.5 |
Not Defined |
0.034% |
starlette-0.49.3-py3-none-any.whl |
Transitive |
N/A* |
❌ |
|
| CVE-2026-45409 |
Medium |
5.3 |
Not Defined |
|
idna-3.11-py3-none-any.whl |
Transitive |
N/A* |
❌ |
|
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-48710
Vulnerable Library - starlette-0.49.3-py3-none-any.whl
The little ASGI library that shines.
Library home page: https://files.pythonhosted.org/packages/a3/e0/021c772d6a662f43b63044ab481dc6ac7592447605b5b35a957785363122/starlette-0.49.3-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260203151958_QLDRQL/python_VXNOQS/202602031519591/env/lib/python3.9/site-packages/starlette-0.49.3.dist-info,/tmp/ws-ua_20260414115749_FASALT/python_KPPKZR/202604141157501/env/lib/python3.9/site-packages/starlette-0.49.3.dist-info
Dependency Hierarchy:
- fastapi-0.128.8-py3-none-any.whl (Root Library)
- ❌ starlette-0.49.3-py3-none-any.whl (Vulnerable Library)
Found in base branch: main
Vulnerability Details
Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP "Host" request header was not validated before being used to reconstruct "request.url". Because the routing algorithm relies on the raw HTTP path while "request.url" is rebuilt from the "Host" header, a malformed header could make "request.url.path" differ from the path that was actually requested. Middleware and endpoints that apply security restrictions based on "request.url" (rather than the raw "scope" path) could therefore be bypassed. Users should upgrade to a version greater than or equal to version 1.0.1, which validates the "Host" header against the grammar of RFC 9112 §3.2 / RFC 3986 §3.2.2 when constructing "request.url" and falls back to "scope["server"]" for malformed values.
Publish Date: 2026-05-26
URL: CVE-2026-48710
Threat Assessment
Exploit Maturity: Not Defined
EPSS: 0.034%
CVSS 3 Score Details (6.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-86qp-5c8j-p5mr
Release Date: 2026-05-26
Fix Resolution: starlette - 1.0.1,starlette - 1.0.1,https://github.com/Kludex/starlette.git - 1.0.1
CVE-2026-45409
Vulnerable Library - idna-3.11-py3-none-any.whl
Internationalized Domain Names in Applications (IDNA)
Library home page: https://files.pythonhosted.org/packages/0e/61/66938bbb5fc52dbdf84594873d5b51fb1f7c7794e9c0f5bd885f30bc507b/idna-3.11-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260414115749_FASALT/python_KPPKZR/202604141157501/env/lib/python3.9/site-packages/idna-3.11.dist-info
Dependency Hierarchy:
- fastapi-0.128.8-py3-none-any.whl (Root Library)
- starlette-0.49.3-py3-none-any.whl
- anyio-4.12.1-py3-none-any.whl
- ❌ idna-3.11-py3-none-any.whl (Vulnerable Library)
Found in base branch: main
Vulnerability Details
This is the same issue as CVE-2024-3651, however the original remediation in 2024 was not a complete fix. Payloads such as ""\u0660" * N" or ""\u30fb" * N + "\u6f22"" utilize the "valid_contexto" function prior to length rejection, and for high values of "N" will take a long time to process. Impact A specially crafted argument to the "idna.encode()" function could consume significant resources. This may lead to a denial-of-service. Patches Starting in version 3.14, the function rejects long inputs as soon as practicable prior to any further processing to minimize resource consumption. In version 3.15, this approach was extended to lesser used alternate functions (i.e. per-label conversions and codec support). Workarounds Domain names cannot exceed 253 characters in length, if this length limit is enforced prior to passing the domain to the "idna.encode()" function it should no longer consume significant resources. This is triggered by arbitrarily large inputs that would not occur in normal usage, but may be passed to the library assuming there is no preliminary input validation by the higher-level application.
Publish Date: 2026-05-21
URL: CVE-2026-45409
Threat Assessment
Exploit Maturity: Not Defined
EPSS:
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-65pc-fj4g-8rjx
Release Date: 2026-05-19
Fix Resolution: idna - 3.15
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260414115749_FASALT/python_KPPKZR/202604141157501/env/lib/python3.9/site-packages/idna-3.11.dist-info
Vulnerabilities
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - starlette-0.49.3-py3-none-any.whl
The little ASGI library that shines.
Library home page: https://files.pythonhosted.org/packages/a3/e0/021c772d6a662f43b63044ab481dc6ac7592447605b5b35a957785363122/starlette-0.49.3-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260203151958_QLDRQL/python_VXNOQS/202602031519591/env/lib/python3.9/site-packages/starlette-0.49.3.dist-info,/tmp/ws-ua_20260414115749_FASALT/python_KPPKZR/202604141157501/env/lib/python3.9/site-packages/starlette-0.49.3.dist-info
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP "Host" request header was not validated before being used to reconstruct "request.url". Because the routing algorithm relies on the raw HTTP path while "request.url" is rebuilt from the "Host" header, a malformed header could make "request.url.path" differ from the path that was actually requested. Middleware and endpoints that apply security restrictions based on "request.url" (rather than the raw "scope" path) could therefore be bypassed. Users should upgrade to a version greater than or equal to version 1.0.1, which validates the "Host" header against the grammar of RFC 9112 §3.2 / RFC 3986 §3.2.2 when constructing "request.url" and falls back to "scope["server"]" for malformed values.
Publish Date: 2026-05-26
URL: CVE-2026-48710
Threat Assessment
Exploit Maturity: Not Defined
EPSS: 0.034%
CVSS 3 Score Details (6.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-86qp-5c8j-p5mr
Release Date: 2026-05-26
Fix Resolution: starlette - 1.0.1,starlette - 1.0.1,https://github.com/Kludex/starlette.git - 1.0.1
Vulnerable Library - idna-3.11-py3-none-any.whl
Internationalized Domain Names in Applications (IDNA)
Library home page: https://files.pythonhosted.org/packages/0e/61/66938bbb5fc52dbdf84594873d5b51fb1f7c7794e9c0f5bd885f30bc507b/idna-3.11-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260414115749_FASALT/python_KPPKZR/202604141157501/env/lib/python3.9/site-packages/idna-3.11.dist-info
Dependency Hierarchy:
Found in base branch: main
Vulnerability Details
This is the same issue as CVE-2024-3651, however the original remediation in 2024 was not a complete fix. Payloads such as ""\u0660" * N" or ""\u30fb" * N + "\u6f22"" utilize the "valid_contexto" function prior to length rejection, and for high values of "N" will take a long time to process. Impact A specially crafted argument to the "idna.encode()" function could consume significant resources. This may lead to a denial-of-service. Patches Starting in version 3.14, the function rejects long inputs as soon as practicable prior to any further processing to minimize resource consumption. In version 3.15, this approach was extended to lesser used alternate functions (i.e. per-label conversions and codec support). Workarounds Domain names cannot exceed 253 characters in length, if this length limit is enforced prior to passing the domain to the "idna.encode()" function it should no longer consume significant resources. This is triggered by arbitrarily large inputs that would not occur in normal usage, but may be passed to the library assuming there is no preliminary input validation by the higher-level application.
Publish Date: 2026-05-21
URL: CVE-2026-45409
Threat Assessment
Exploit Maturity: Not Defined
EPSS:
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-65pc-fj4g-8rjx
Release Date: 2026-05-19
Fix Resolution: idna - 3.15