Is CVE-2026-34080 in the CISA KEV catalog?

No. CVE-2026-34080 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34080?

CVE-2026-34080 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2026-34080?

CVE-2026-34080 has an EPSS score of 0.18% (7th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34080?

Upgrade xdg-dbus-proxy on debian 11 to 0.1.2-2+deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2026-34080

MEDIUM

5.5

CVSS v3

NVD

Description

xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' (with a space before the equals sign) and similar cases. Clients can intercept D-Bus messages they should not have access to. This vulnerability is fixed in 0.1.7.

CWE-1289

How to fix

Remediation Available

xdg-dbus-proxyDebian

Fixed in:0.1.2-2+deb11u1CVE-2026-34080

Fixed in:0.1.4-3+deb12u1CVE-2026-34080

Fixed in:0.1.6-1+deb13u1CVE-2026-34080

Fixed in:0.1.7-1CVE-2026-34080

xdg-dbus-proxyUbuntu

Fixed in:0.1.2-1ubuntu0.1~esm1USN-8167-2

Fixed in:0.1.3-1ubuntu0.1USN-8167-1

Fixed in:0.1.5-1ubuntu0.2USN-8167-1

Fixed in:0.1.6-1ubuntu0.1USN-8167-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.18%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Vendor Advisory1

github.com

Third-Party Advisory1

openwall.com

Other references1

lists.debian.org

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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 2026-04-21.