PatchSiren cyber security CVE debrief

CVE-2026-50889 LLDAP CVE debrief

CVE-2026-50889 is a Denial of Service (DoS) vulnerability in LLDAP v0.6.2. The vulnerability is caused by an input handling flaw in the HTTP refresh token process, which allows attackers to send a crafted refresh-token header to cause a DoS. The CVE was published on 2026-06-15T20:16:31.897Z and has not been modified since then.

Vendor: LLDAP
Product: LLDAP
CVSS: Unknown
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-15
Original CVE updated: 2026-06-15
Advisory published: 2026-06-15
Advisory updated: 2026-06-15

Who should care

Users of LLDAP v0.6.2 should be aware of this vulnerability and take necessary steps to mitigate it.

Technical summary

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.

Defensive priority

High

Recommended defensive actions

Update to a patched version of LLDAP, if available.
Implement input validation and sanitization for HTTP refresh token headers.
Monitor for suspicious traffic and implement rate limiting on refresh token requests.

Evidence notes

The CVE record for CVE-2026-50889 can be found at [cve-org]. The NVD detail for this vulnerability can be found at [nvd]. Additional information can be found at [ref-4].

Official resources

CVE-2026-50889 was published on 2026-06-15T20:16:31.897Z and has not been modified since then.