How severe is CVE-2026-40162?

CVE-2026-40162 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-40162 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40162?

CVE-2026-40162 affects Bugsink. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40162?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40162 have an EU (EUVD) identifier?

Yes. CVE-2026-40162 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21515.

When was CVE-2026-40162 published?

CVE-2026-40162 was published on 2026-04-10 and last updated on 2026-06-17.

CVE-2026-40162

CVE-2026-40162 is a high-severity vulnerability in Bugsink with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21515
Weakness: CWE-20
Affected product: Bugsink
Published: 2026-04-10
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-40162?: CVE-2026-40162 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-40162 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40162?: CVE-2026-40162 affects Bugsink. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40162?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40162 have an EU (EUVD) identifier?: Yes. CVE-2026-40162 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21515.
When was CVE-2026-40162 published?: CVE-2026-40162 was published on 2026-04-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bugsink:bugsink:2.1.0:*:*:*:*:*:*:*

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