CVE-2020-24660
CVE-2020-24660 is a critical-severity vulnerability in Lemonldap-ng Lemonldap with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-425.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-425
- Affected product: Lemonldap-ng Lemonldap
- Published:
- Last modified:
Description
An issue was discovered in LemonLDAP::NG through 2.0.8, when NGINX is used. An attacker may bypass URL-based access control to protected Virtual Hosts by submitting a non-normalized URI. This also affects versions before 0.5.2 of the "Lemonldap::NG handler for Node.js" package.
Frequently asked questions
- What is CVE-2020-24660?
- An issue was discovered in LemonLDAP::NG through 2.0.8, when NGINX is used. An attacker may bypass URL-based access control to protected Virtual Hosts by submitting a non-normalized URI. This also affects versions before 0.5.2 of the "Lemonldap::NG handler for Node.js" package.
- How severe is CVE-2020-24660?
- CVE-2020-24660 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-24660 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24660?
- CVE-2020-24660 primarily affects Lemonldap-ng Lemonldap. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-24660?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-24660 published?
- CVE-2020-24660 was published on 2020-09-14 and last updated on 2026-06-17.
References
- https://github.com/LemonLDAPNG/node-lemonldap-ng-handler/releases/tag/0.5.2
- https://github.com/LemonLDAPNG/node-lemonldap-ng-handler/security/advisories/GHSA-x44x-r84w-8v67
- https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2290
- https://www.debian.org/security/2020/dsa-4762
Affected products (3)
- cpe:2.3:a:lemonldap-ng:lemonldap\:\:ng:*:*:*:*:*:*:*:*
- cpe:2.3:a:lemonldap-ng:lemonldap\:\:ng_handler:*:*:*:*:*:node.js:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
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