CVE-2026-40162 json
Bugsink affected by authenticated arbitrary file write in artifactbundle/assemble
published 2026-04-10 6 mo ago modified 2026-07-13 3 mo ago also EUVD-2026-21515 , GHSA-8hw4-fhww-273g , PYSEC-2026-2404
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L |
| OSV | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | bugsink | >=2.1.0, <2.1.1 |
2.1.1 |
Affected products
- bugsink bugsink
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
github.com
/bugsink/bugsink/security/advisories/GHSA-8hw4-fhww-273g
web, mitigation, vendor-advisory
-
github.com
/bugsink/bugsink/releases/tag/2.1.1
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-40162
advisory
-
github.com
/bugsink/bugsink
package
-
pypi.org
/project/bugsink
package
-
github.com
/advisories/GHSA-8hw4-fhww-273g
advisory
Sources
- CVE List CVE-2026-40162
- GitHub Advisory GHSA-8hw4-fhww-273g
- NVD CVE-2026-40162
- OSV PYSEC-2026-2404
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.