CVE-2026-50889
LLDAP HTTP Refresh Token Denial of Service
Description
An input handling flaw in the HTTP refresh token process of LLDAP v0.6.2 allows attackers to cause a Denial of Service (DoS) via sending a crafted refresh-token header.
INFO
Published Date :
June 15, 2026, 8:16 p.m.
Last Modified :
June 17, 2026, 4:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update LLDAP to a version that addresses the flaw.
- Validate refresh token header input rigorously.
- Implement rate limiting for token requests.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-50889.
| URL | Resource |
|---|---|
| https://gist.github.com/pyuysig/41937c47514ff63d66a3be98ab8e8a7d | Exploit Third Party Advisory |
| https://gist.github.com/pyuysig/41937c47514ff63d66a3be98ab8e8a7d | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-50889 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-50889
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-50889 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-50889 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:lldap:lldap:0.6.2:*:*:*:*:*:*:* Added Reference Type MITRE: https://gist.github.com/pyuysig/41937c47514ff63d66a3be98ab8e8a7d Types: Exploit, Third Party Advisory Added Reference Type CISA-ADP: https://gist.github.com/pyuysig/41937c47514ff63d66a3be98ab8e8a7d Types: Exploit, Third Party Advisory -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'n/a', 'product': 'n/a', 'versions': [{'status': 'affected', 'version': 'n/a'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-50889', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-16T15:05:50.448585Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-400 Added Reference https://gist.github.com/pyuysig/41937c47514ff63d66a3be98ab8e8a7d -
New CVE Received by [email protected]
Jun. 15, 2026
Action Type Old Value New Value Added Description An input handling flaw in the HTTP refresh token process of LLDAP v0.6.2 allows attackers to cause a Denial of Service (DoS) via sending a crafted refresh-token header. Added Reference https://gist.github.com/pyuysig/41937c47514ff63d66a3be98ab8e8a7d