CVE-2026-39354: Scoold has an Authenticated Arbitrary Question Overwrite via Client-Controlled postId in POST /questions/ask

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-07 · updated 2026-07-24
Weakness: CWE-639

Description

Scoold is a Q&A and a knowledge sharing platform for teams. Prior to 1.66.2, an authenticated authorization flaw in Scoold allows any logged-in, low-privilege user to overwrite another user's existing question by supplying that question's public ID as the postId parameter to POST /questions/ask. Because question IDs are exposed in normal question URLs, a low-privilege attacker can take a victim question ID from a public page and cause attacker-controlled content to be stored under that existing question object. This causes direct integrity loss of user-generated content and corrupts the integrity of the existing discussion thread. This vulnerability is fixed in 1.66.2.

Affected products

Erudika scoold: before 1.66.2 — fixed in 1.66.2

How to fix

Upgrade to a fixed version: Erudika scoold 1.66.2. Check the vendor advisory for mitigations.

References

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