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Lookup for vulnerable packages by Package URL.

Purlpkg:pypi/jupyterhub-ltiauthenticator@1.4.0
Typepypi
Namespace
Namejupyterhub-ltiauthenticator
Version1.4.0
Qualifiers
Subpath
Is_vulnerablefalse
Next_non_vulnerable_version1.6.3
Latest_non_vulnerable_version1.6.3
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-111h-br2m-7bbu
vulnerability_id VCID-111h-br2m-7bbu
summary 
LTI JupyterHub Authenticator does not properly validate JWT Signature
### Impact

Only users that has configured a JupyterHub installation to use the authenticator class `LTI13Authenticator` are influenced.

LTI13Authenticator that was introduced in `jupyterhub-ltiauthenticator` 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a forged request granting access to existing and new user identities.

### Patches

None.

### Workarounds

None.

### References

- [This code segment](https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164) didn't validate a JWT signature.
references
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2023-25574
reference_id
reference_type
scores
0
value 0.00234
scoring_system epss
scoring_elements 0.46212
published_at 2026-04-04T12:55:00Z
1
value 0.00234
scoring_system epss
scoring_elements 0.46192
published_at 2026-04-02T12:55:00Z
2
value 0.0037
scoring_system epss
scoring_elements 0.58876
published_at 2026-04-12T12:55:00Z
3
value 0.0037
scoring_system epss
scoring_elements 0.58893
published_at 2026-04-11T12:55:00Z
4
value 0.0037
scoring_system epss
scoring_elements 0.58856
published_at 2026-04-13T12:55:00Z
5
value 0.00587
scoring_system epss
scoring_elements 0.69119
published_at 2026-04-09T12:55:00Z
6
value 0.00587
scoring_system epss
scoring_elements 0.69099
published_at 2026-04-08T12:55:00Z
7
value 0.00587
scoring_system epss
scoring_elements 0.6905
published_at 2026-04-07T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2023-25574
1
reference_url https://github.com/jupyterhub/ltiauthenticator
reference_id
reference_type
scores
0
value 10.0
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/jupyterhub/ltiauthenticator
2
reference_url https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164
reference_id
reference_type
scores
0
value 10
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
1
value 10.0
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
2
value CRITICAL
scoring_system generic_textual
scoring_elements
3
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-02-25T14:50:01Z/
url https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164
3
reference_url https://github.com/jupyterhub/ltiauthenticator/blob/main/CHANGELOG.md#140---2023-03-01
reference_id
reference_type
scores
0
value 10
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
1
value 10.0
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
2
value CRITICAL
scoring_system generic_textual
scoring_elements
3
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-02-25T14:50:01Z/
url https://github.com/jupyterhub/ltiauthenticator/blob/main/CHANGELOG.md#140---2023-03-01
4
reference_url https://github.com/jupyterhub/ltiauthenticator/security/advisories/GHSA-mcgx-2gcr-p3hp
reference_id
reference_type
scores
0
value 10
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
1
value 10.0
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
2
value CRITICAL
scoring_system cvssv3.1_qr
scoring_elements
3
value CRITICAL
scoring_system generic_textual
scoring_elements
4
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-02-25T14:50:01Z/
url https://github.com/jupyterhub/ltiauthenticator/security/advisories/GHSA-mcgx-2gcr-p3hp
5
reference_url https://nvd.nist.gov/vuln/detail/CVE-2023-25574
reference_id
reference_type
scores
0
value 10.0
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2023-25574
6
reference_url https://github.com/advisories/GHSA-mcgx-2gcr-p3hp
reference_id GHSA-mcgx-2gcr-p3hp
reference_type
scores
0
value CRITICAL
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-mcgx-2gcr-p3hp
fixed_packages
0
url pkg:pypi/jupyterhub-ltiauthenticator@1.4.0
purl pkg:pypi/jupyterhub-ltiauthenticator@1.4.0
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub-ltiauthenticator@1.4.0
aliases CVE-2023-25574, GHSA-mcgx-2gcr-p3hp
risk_score 4.5
exploitability 0.5
weighted_severity 9.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-111h-br2m-7bbu
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub-ltiauthenticator@1.4.0