Is CVE-2026-42865 in the CISA KEV catalog?

No. CVE-2026-42865 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-42865?

CVE-2026-42865 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2026-42865?

CVE-2026-42865 has an EPSS score of 0.23% (14th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42865?

Upgrade inbox zero to 2.29.3 or later.

CVE & CISA-KEV Catalog

CVE-2026-42865

MEDIUM

4.3

CVSS v3

NVD

Description

Inbox Zero is an AI personal assistant for email. Prior to 2.29.3, the cleaner email stream endpoint used a shared Redis subscription listener, which could deliver thread events for one authenticated account to another authenticated account using the cleaner feature at the same time. This vulnerability is fixed in 2.29.3.

CWE-200Information Exposure

How to fix

Remediation Available

inbox zeroNVD

Affected:< 2.29.3Fixed in:2.29.3CVE-2026-42865derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-21.