Improper input validation in Bugsink
CVE-2026-40162
Bugsink is a self-hosted error tracking tool. In 2.1.0, an authenticated file write vulnerability was identified in Bugsink 2.1.0 in the artifact bundle assembly flow. A user with a valid authentication token could cause the application to write attacker-controlled content to a filesystem location writable by the Bugsink process. This vulnerability is fixed in 2.1.1.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (41.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Bugsink — versions >= 2.1.0, < 2.1.1, 2.1.0
Weakness classification (CWE)
References
- github.com/bugsink/bugsink/security/advisories/GHSA-8hw4-fhww-273g (Mitigation, Vendor Advisory)
- github.com/bugsink/bugsink/releases/tag/2.1.1 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-40162?
- CVE-2026-40162 is a high-severity vulnerability in Bugsink, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2026-04-10.
- How severe is CVE-2026-40162?
- High severity. CVSS v3 base score is 7.1 out of 10.