CVE-2021-40960: Galera WebTemplate 1.0 is affected by a directory traversal vulnerability that could reveal information from /

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-40960 is a critical-severity flaw (CVSS 9.8) affecting galera webtemplate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Galera WebTemplate 1.0 is affected by a directory traversal vulnerability that could reveal information from /etc/passwd and /etc/shadow.

Why this priority

Critical severity
EPSS top 4%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	9.9% (top 4%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-10-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: galera

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-10-01 14:15 UTCPublished CVE record published
2026-06-17 04:07 UTCUpdated Record last modified

galera galera webtemplate DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy galera-webtemplate || rpm -q galera-webtemplate || galera-webtemplate --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison galera-webtemplate sudo apt install galera-webtemplate=<VERSION_BEFORE_1.0> sudo apt-mark hold galera-webtemplate

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list galera-webtemplate sudo dnf downgrade galera-webtemplate-<VERSION_BEFORE_1.0> sudo dnf versionlock add galera-webtemplate

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Galera WebTemplate 1.0 Directory Traversal

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-2021-40960?

galera webtemplate: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-40960 being exploited?

CVE-2021-40960 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-2021-40960 affect?

CVE-2021-40960 affects galera webtemplate. Severity is critical (CVSS 9.8). Galera WebTemplate 1.0 is affected by a directory traversal vulnerability that could reveal information from /etc/passwd and /etc/shadow.

How urgent is CVE-2021-40960?

Priority 68/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

References

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