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CVE-2026-109568

HIGHCVSS 7.1/10EPSS 0.25%

Last modified

CVE-2026-109568 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

CVSS 4.0
7.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/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

EPSS Probability
0.25%

14.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
MarceauKaShaark>= 1.2.13, <= 1.2.44

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-109568?
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.
How severe is CVE-2026-109568?
CVE-2026-109568 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2026-109568?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST