CVE-2026-45344

LinkAce: Setup database password newline injection enables pre-auth RCE on uninitialized instances

State: Published
Severity: 8.1 High
Published: May 28, 2026
Updated: Jun 1, 2026
Reserved: May 11, 2026

Description

LinkAce is a self-hosted archive to collect website links. Prior to 2.5.6, the setup database configuration flow on uninitialized LinkAce instances accepts attacker-controlled database credential fields and writes them back into .env without escaping. A remote attacker who can reach the setup endpoints and supply a database they control can inject mail configuration variables and achieve command execution when the application later sends mail. This vulnerability is fixed in 2.5.6.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Affected Products

Product	Versions
LinkAceKovah	< 2.5.6Affected

References

https://github.com/Kovah/LinkAce/security/advisories/GHSA-37m5-936h-w455

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