CVE-2026-91012: org.apache.karaf.config.core.impl.ConfigRepositoryImpl#update(pid, properties), which backs the "config" MBean

Q: How do I fix CVE-2026-91012?

karaf: upgrade to 4.4.12. Exact commands for each OS are on this page.

Q: Is CVE-2026-91012 being exploited?

CVE-2026-91012 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-2026-91012 affect?

CVE-2026-91012 affects karaf. Severity is critical (CVSS 9.8). org.apache.karaf.config.core.impl.ConfigRepositoryImpl#update(pid, properties), which backs the "config" MBean and the config:* shell commands, derives the file it writes a configuration to from caller-supplied input without checking that t

Q: How urgent is CVE-2026-91012?

Priority 60/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2026-91012 is a critical-severity flaw (CVSS 9.8) affecting karaf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

org.apache.karaf.config.core.impl.ConfigRepositoryImpl#update(pid, properties), which backs the "config" MBean and the config:* shell commands, derives the file it writes a configuration to from caller-supplied input without checking that the result stays inside ${karaf.etc}: * if the submitted property map contains a felix.fileinstall.filename entry, that value is turned directly into a File (getCfgFileFromProperty), so it can point to any a

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-09-29
Last modified	2026-10-07

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-29 09:17 UTCPublished CVE record published
2026-10-07 20:16 UTCUpdated Record last modified

apache karaf UPGRADE

Affected: < 4.4.12

Fixed in: 4.4.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy karaf || rpm -q karaf || karaf --version

2. UPGRADE to 4.4.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade karaf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade karaf

Note

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

Exact fixes by distribution

Fedora ELN · edk2 · FIXED · 20260812-12.eln159 · FEDORA-2026-e316b6370a · source

sudo dnf upgrade --advisory=FEDORA-2026-e316b6370a

Fedora 46 · perl-Mojo-DOM58 · FIXED · 3.003-1.fc46 · FEDORA-2026-d5412af3de · source

sudo dnf upgrade --advisory=FEDORA-2026-d5412af3de

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-2026-91012?

karaf: upgrade to 4.4.12. Exact commands for each OS are on this page.

Is CVE-2026-91012 being exploited?

CVE-2026-91012 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-2026-91012 affect?

CVE-2026-91012 affects karaf. Severity is critical (CVSS 9.8). org.apache.karaf.config.core.impl.ConfigRepositoryImpl#update(pid, properties), which backs the "config" MBean and the config:* shell commands, derives the file it writes a configuration to from caller-supplied input without checking that t

How urgent is CVE-2026-91012?

Priority 60/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

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References

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