CVE-2026-102580: A flaw was found in Moodle

Routine

LOW 2.2UPGRADE

CVE-2026-102580 is a low-severity flaw (CVSS 2.2) affecting moodle. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.2 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-470
Published	2026-09-30
Last modified	2026-10-01

Publisher (CNA): Fedora Project · Vendor: moodle

Last updated 2026-10-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-30 09:17 UTCPublished CVE record published
2026-10-01 14:36 UTCUpdated Record last modified

moodle moodle UPGRADE

Affected: < 4.5.13 · >= 5.0.0 and < 5.0.9 · >= 5.1.0 and < 5.1.6 · >= 5.2.0 and < 5.2.2

Fixed in: 4.5.13, 5.0.9, 5.1.6, 5.2.2

Safe to downgrade to: a release before 5.0.0

1. Check installed version

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

2. UPGRADE to 4.5.13 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade moodle

Note

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

3. If no update is available yet, DOWNGRADE to a release before 5.0.0 (Debian / Ubuntu)

apt-cache madison moodle sudo apt install moodle=<VERSION_BEFORE_5.0.0> sudo apt-mark hold moodle

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list moodle sudo dnf downgrade moodle-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add moodle

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.

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-2026-102580?

moodle: upgrade to 4.5.13, 5.0.9, 5.1.6, 5.2.2. Exact commands for each OS are on this page.

Is CVE-2026-102580 being exploited?

CVE-2026-102580 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-2026-102580 affect?

CVE-2026-102580 affects moodle. Severity is low (CVSS 2.2). A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of in

How urgent is CVE-2026-102580?

Priority 11/100. No elevated risk signals yet.

Software pages

Moodle vulnerabilities

Related CVEs

CVE-2026-102588 MEDIUM 6.5 UPGRADE A flaw was found in Moodle
CVE-2026-102586 MEDIUM 4.3 UPGRADE A flaw was found in Moodle
CVE-2026-102581 MEDIUM 4.6 UPGRADE A flaw was found in Moodle
CVE-2026-102582 LOW 2.2 UPGRADE A flaw was found in Moodle
CVE-2026-102583 LOW 2.7 UPGRADE A flaw was found in Moodle

References

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