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CVE-2026-13078: A vulnerability was discovered in MongoDB Server where the server-side MozJS scripting engine unconditionally

35
Routine
HIGH 7.7UPGRADE

CVE-2026-13078 is a high-severity flaw (CVSS 7.7) affecting mongodb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was discovered in MongoDB Server where the server-side MozJS scripting engine unconditionally registered a module loading hook that enables JavaScript calls to read arbitrary files from the host filesystem using the mongod process's privileges. An authenticated user could exploit this through crafted aggregation pipeline commands to read sensitive files accessible to the MongoDB server process.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.7 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.4% (top 70%)
CISA exploited listNo
WeaknessCWE-862
Published2026-07-22
Last modified2026-10-24
Publisher (CNA): MongoDB, Inc. · Vendor: mongodb

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

mongodb mongodb UPGRADE
Affected: >= 7.0.0 and < 7.0.39 · >= 8.0.0 and < 8.0.28 · >= 8.2.0 and < 8.2.12 · >= 8.3.0 and < 8.3.7
Fixed in: 7.0.39, 8.0.28, 8.2.12, 8.3.7
Safe to downgrade to: a release before 7.0.0
1. Check installed version
apt-cache policy mongodb || rpm -q mongodb || mongodb --version
2. UPGRADE to 7.0.39 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade mongodb
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade mongodb
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 7.0.0 (Debian / Ubuntu)
apt-cache madison mongodb sudo apt install mongodb=<VERSION_BEFORE_7.0.0> sudo apt-mark hold mongodb
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list mongodb sudo dnf downgrade mongodb-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add mongodb
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.

Exact fixes by distribution

Fedora ELN · selinux-policy · FIXED · 45.23-1.eln159 · FEDORA-2026-3668c969a2 · source
sudo dnf upgrade --advisory=FEDORA-2026-3668c969a2
Fedora 46 · sugar-toolkit-gtk3 · FIXED · 0.122-2.fc46 · FEDORA-2026-d11eb2faf0 · source
sudo dnf upgrade --advisory=FEDORA-2026-d11eb2faf0

Public exploits and detection

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

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-2026-13078?

mongodb: upgrade to 7.0.39, 8.0.28, 8.2.12, 8.3.7. Exact commands for each OS are on this page.

Is CVE-2026-13078 being exploited?

CVE-2026-13078 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-2026-13078 affect?

CVE-2026-13078 affects mongodb. Severity is high (CVSS 7.7). A vulnerability was discovered in MongoDB Server where the server-side MozJS scripting engine unconditionally registered a module loading hook that enables JavaScript calls to read arbitrary files from the host filesystem using the mongod p

How urgent is CVE-2026-13078?

Priority 35/100. High severity

Software pages

MongoDB vulnerabilities

Related CVEs

References

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