oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE
Published Oct 4, 2020
7.5
HIGHCVSS 3.1
EPSS 2.19%
Description
oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of "RFC 6749 compliant" is valid and not misleading and I also therefore wouldn't describe this as a "vulnerability" with the library per se.
Affected products
No data.
- ≤ 3.1.1
No data.
No Red Hat product state for this CVE.
oauth2-server
npm
Introduced 0 Fixed not fixed
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | oauth2-server | 0 | not fixed |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.19% (0.02190) | 81.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.16% (0.02163) | 79.80th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.19% (0.00192) | 39.02th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.55% (0.00551) | 77.73th | v3 (v2023.03.01) |
| May 18, 2024 | 0.55% (0.00551) | 77.44th | v3 (v2023.03.01) |
| May 2, 2024 | 0.78% (0.00781) | 81.19th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.78% (0.00781) | 79.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00445) | 70.97th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (7)
- https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467 x_refsource_MISCThird Party Advisory
- https://github.com/advisories/GHSA-2fw4-mgq9-39cx Advisory
- https://github.com/oauthjs/node-oauth2-server/issues/637 x_refsource_MISCExploitThird Party Advisory
- https://github.com/oauthjs/node-oauth2-server/pull/452 x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-18924
- https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15 x_refsource_MISCExploitThird Party Advisory
- https://tools.ietf.org/html/rfc7636 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467 | x_refsource_MISCThird Party Advisory | |
| https://github.com/advisories/GHSA-2fw4-mgq9-39cx | Advisory | |
| https://github.com/oauthjs/node-oauth2-server/issues/637 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/oauthjs/node-oauth2-server/pull/452 | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-18924 | ||
| https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15 | x_refsource_MISCExploitThird Party Advisory | |
| https://tools.ietf.org/html/rfc7636 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.