OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request
Published Sep 25, 2019
9.8
CRITICALCVSS 3.1
EPSS 2.46%
Description
OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.
Affected products
No data.
Configuration 1
- ≥ 2.0.0 · ≤ 2.0.5
Configuration 2
- 10.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.46% (0.02461) | 83.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.20% (0.02197) | 80.11th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.47% (0.00469) | 75.83th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.47% (0.00469) | 74.83th | v3 (v2023.03.01) |
| Jul 30, 2023 | 0.47% (0.00469) | 72.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.48% (0.00484) | 72.19th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.35% (0.15351) | 91.59th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.50% (0.04504) | 76.47th | v1 |
| Jan 6, 2022 | 4.50% (0.04504) | 76.26th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (4)
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881 x_refsource_MISCThird Party Advisory
- https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/ x_refsource_MISCThird Party Advisory
- https://seclists.org/bugtraq/2019/Sep/46 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://www.debian.org/security/2019/dsa-4533 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881 | x_refsource_MISCThird Party Advisory | |
| https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/ | x_refsource_MISCThird Party Advisory | |
| https://seclists.org/bugtraq/2019/Sep/46 | mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory | |
| https://www.debian.org/security/2019/dsa-4533 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.