TI-2026-33138 Aliases CVE-2026-45344

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

HIGH 70CWE-74Published 2026-05-28 · Updated 2026-06-01

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00456 39th percentileScored 2026-11-07

Fix Fixed LinkAce (Kovah): 2.5.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Kovah	LinkAce	before 2.5.6	2.5.6	Patch available	CNA

LinkAce VendorKovah Affected before 2.5.6 Fixed in 2.5.6 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:linkace:linkace::::::::	—	—	Kovah

cpe:2.3:a:linkace:linkace:*:*:*:*:*:*:*:* Versions — — ·Kovah

Remediation

Fix · CNA LinkAce (Kovah) Fixed in 2.5.6

Timeline

2026-10-02 Threatist record created from CVE-2026-45344
2026-10-25 EPSS moved to the below the 50th percentile

References

Other 1

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

TI-2026-21865 LinkAce: Stored XSS in Atom Feed via CDATA Escape in List Description CVSS 4.0HIGH 8.7
TI-2025-38912 LinkAce: Stored XSS Vulnerability in Link Title Field Through Social Media Sharing Feature CVSS 4.0HIGH 8.7
TI-2026-33137 LinkAce - Stored XSS via Unsanitized SSO User's Name Rendered in Admin Audit Log Allows Session Hijacking CVSS 4.0HIGH 8.5
TI-2025-33730 LinkAce has a Stored One Click XSS vulnerability CVSS 4.0HIGH 8.4
TI-2026-26303 LinkAce's SSRF protection can be bypassed via internal hostname resolution in LinkAce CVSS 3.1HIGH 8.5
TI-2026-36594 LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API CVSS 3.1HIGH 7.3

See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences