CVE-2026-34080: xdg-dbus-proxy is a filtering proxy for D-Bus connections

Q: How do I fix CVE-2026-34080?

xdg-dbus-proxy: upgrade to 0.1.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-34080 being exploited?

CVE-2026-34080 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34080 affect?

CVE-2026-34080 affects xdg-dbus-proxy. Severity is medium (CVSS 5.5). 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' (wit

Q: How urgent is CVE-2026-34080?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2026-34080 is a medium-severity flaw (CVSS 5.5) affecting xdg-dbus-proxy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-1289
Published	2026-04-07
Last modified	2026-07-24

Publisher (CNA): GitHub, Inc. · Vendor: flatpak

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-07 21:17 UTCPublished CVE record published
2026-07-24 22:10 UTCUpdated Record last modified

flatpak xdg-dbus-proxy UPGRADE

Affected: < 0.1.7

Fixed in: 0.1.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xdg-dbus-proxy || rpm -q xdg-dbus-proxy || xdg-dbus-proxy --version

2. UPGRADE to 0.1.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xdg-dbus-proxy

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xdg-dbus-proxy

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34080?

xdg-dbus-proxy: upgrade to 0.1.7. Exact commands for each OS are on this page.

Is CVE-2026-34080 being exploited?

CVE-2026-34080 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34080 affect?

CVE-2026-34080 affects xdg-dbus-proxy. Severity is medium (CVSS 5.5). 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' (wit

How urgent is CVE-2026-34080?

Priority 21/100. No elevated risk signals yet.

References

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