CVE-2026-30954
LinkAce has a Cross-User Tag/List Attachment IDOR in processTaxonomy()
Description
LinkAce is a self-hosted archive to collect website links. In 2.1.0 and earlier, the processTaxonomy() method in LinkRepository.php allows authenticated users to attach other users' private tags and lists to their own links by passing integer IDs.
INFO
Published Date :
March 10, 2026, 9:16 p.m.
Last Modified :
March 17, 2026, 4:13 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update LinkAce to version 2.1.1 or later.
- Review and sanitize user-provided IDs in taxonomy operations.
- Ensure proper authorization checks for tag and list modifications.
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-2026-30954.
| URL | Resource |
|---|---|
| https://github.com/Kovah/LinkAce/security/advisories/GHSA-vc99-cgj6-wwxh | Mitigation Vendor 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-2026-30954 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-2026-30954
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-2026-30954 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-30954 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]
Mar. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:linkace:linkace:*:*:*:*:*:*:*:* versions up to (including) 2.1.0 Added Reference Type GitHub, Inc.: https://github.com/Kovah/LinkAce/security/advisories/GHSA-vc99-cgj6-wwxh Types: Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Mar. 10, 2026
Action Type Old Value New Value Added Description LinkAce is a self-hosted archive to collect website links. In 2.1.0 and earlier, the processTaxonomy() method in LinkRepository.php allows authenticated users to attach other users' private tags and lists to their own links by passing integer IDs. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-639 Added Reference https://github.com/Kovah/LinkAce/security/advisories/GHSA-vc99-cgj6-wwxh