CVE-2026-40920: Privilege Escalation via URL Parameter is reported in Apache Ranger versions <= 2.8.0. Users are recommended

Q: How do I fix CVE-2026-40920?

ranger: upgrade to 2.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-40920 being exploited?

CVE-2026-40920 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-2026-40920 affect?

CVE-2026-40920 affects ranger. Severity is critical (CVSS 9.8). Privilege Escalation via URL Parameter is reported in Apache Ranger versions <= 2.8.0. Users are recommended to upgrade to version 2.9.0, which fixes this issue.

Q: How urgent is CVE-2026-40920?

Priority 61/100. 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-2026-40920 is a critical-severity flaw (CVSS 9.8) affecting ranger. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Privilege Escalation via URL Parameter is reported in Apache Ranger versions <= 2.8.0. Users are recommended to upgrade to version 2.9.0, which fixes this issue.

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	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-20, CWE-269, CWE-287
Published	2026-08-10
Last modified	2026-10-23

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

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-10 11:17 UTCPublished CVE record published
2026-10-23 20:10 UTCUpdated Record last modified

apache ranger UPGRADE

Affected: < 2.9.0

Fixed in: 2.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.9.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ranger

Note

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

Exact fixes by distribution

Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source

sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3

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-2026-40920?

ranger: upgrade to 2.9.0. Exact commands for each OS are on this page.

Is CVE-2026-40920 being exploited?

CVE-2026-40920 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-2026-40920 affect?

CVE-2026-40920 affects ranger. Severity is critical (CVSS 9.8). Privilege Escalation via URL Parameter is reported in Apache Ranger versions <= 2.8.0. Users are recommended to upgrade to version 2.9.0, which fixes this issue.

How urgent is CVE-2026-40920?

Priority 61/100. 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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