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TI-2026-71298 Aliases CVE-2026-109568GHSA-33mg-5c73-726g

Shaark Missing Authorization in Link, Story, Chest and Album API Routes

Priority LOW 31CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Shaark from 1.2.13 through 1.2.44 by MarceauKa is affected by a missing authorization flaw in its Link, Story, Chest and Album API controllers. The controllers skip ownership checks, which is an authorization bypass through a user-controlled key (CWE-639). An authenticated non-admin user with low privileges can send PUT or DELETE requests with numeric IDs to overwrite or delete other users' content, including private items.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00246 15th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MarceauKaShaark1.2.13 – 1.2.44—No fix listedCNA
  • Shaark VendorMarceauKa Affected 1.2.13 – 1.2.44 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Shaark.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109568
  2. 2026-10-13 Alias added: GHSA-33mg-5c73-726g
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed

References

Patch 1

Other 2

Sources

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