CVE-2026-33953

LinkAce's SSRF protection can be bypassed via internal hostname resolution in LinkAce

HIGH
8.5
CVSS Score
Published: March 27, 2026 at 09:22 PM UTC
Updated: June 17, 2026 at 10:38 AM UTC
2 products affected across 2 vendorsLinkaceLinkAce

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Severity
HIGH8.5
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

LinkAce is a self-hosted archive to collect website links. Versions prior to 2.5.3 block direct requests to private IP literals, but still performs server-side requests to internal-only resources when those resources are referenced through an internal hostname. This allows an authenticated user to trigger server-side requests to internal services reachable by the LinkAce server but not directly reachable by an external user. Version 2.5.3 patches the issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.5.3
v < 2.5.3
Affected range stops below 2.5.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/Kovah/LinkAce/security/advisories/GHSA-wp4g-qw9j-wfjg

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-918

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