Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109568Shaark 1.2.13 through 1.2.44 Missing Authorization via API Update and Delete Routes

High 7.1

In plain English

A high-severity authorization bypass via user-controlled key in Shaark from MarceauKa. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.2%top 84.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Shaark 1.2.13 through 1.2.44 contains a missing authorization vulnerability in the Link, Story, Chest and Album API controllers that skips ownership checks. Authenticated non-admin users can send PUT or DELETE requests to /api/{link,story,chest,album}/{id} with numeric IDs to overwrite or delete other users' content, including private items.

Affected products (as reported)

Vendor	Product	Versions
MarceauKa	Shaark	1.2.13 – through 1.2.44

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

References

GitHub Pull Request #110 issue-tracking, patch
Vulnerable code in LinkController.php technical-description
https://github.com/MarceauKa/shaark product
VulnCheck Advisory: Shaark 1.2.13 through 1.2.44 Missing Authorization via API Update and Delete Routes third-party-advisory