CVE-2024-6426: Information exposure vulnerability in MESbook 20221021.03 version, the exploitation of which could allow a loc

Routine

HIGH 8.1DOWNGRADE

CVE-2024-6426 is a high-severity flaw (CVSS 8.1) affecting mesbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Information exposure vulnerability in MESbook 20221021.03 version, the exploitation of which could allow a local attacker, with user privileges, to access different resources by changing the API value of the application.

Why this priority

High severity

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

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-200
Published	2024-07-03
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: mesbook

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

Am I affected?

Timeline

2024-07-03 12:15 UTCPublished CVE record published
2026-06-17 08:17 UTCUpdated Record last modified

mesbook mesbook DOWNGRADE

Affected: 20221021.03

Fixed in: no fixed release known

Safe to downgrade to: a release before 20221021.03

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 20221021.03 (Debian / Ubuntu)

apt-cache madison mesbook sudo apt install mesbook=<VERSION_BEFORE_20221021.03> sudo apt-mark hold mesbook

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

dnf --showduplicates list mesbook sudo dnf downgrade mesbook-<VERSION_BEFORE_20221021.03> sudo dnf versionlock add mesbook

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-2024-6426?

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

Is CVE-2024-6426 being exploited?

CVE-2024-6426 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-2024-6426 affect?

CVE-2024-6426 affects mesbook. Severity is high (CVSS 8.1). Information exposure vulnerability in MESbook 20221021.03 version, the exploitation of which could allow a local attacker, with user privileges, to access different resources by changing the API value of the application.

How urgent is CVE-2024-6426?

Priority 34/100. High severity

Related CVEs

CVE-2024-6427 HIGH 7.5 DOWNGRADE Uncontrolled Resource Consumption vulnerability in MESbook 20221021.03 version
CVE-2024-6425 CRITICAL 9.1 DOWNGRADE Incorrect Provision of Specified Functionality vulnerability in MESbook 20221021.03 version
CVE-2024-6424 CRITICAL 9.3 DOWNGRADE External server-side request vulnerability in MESbook 20221021.03 version, which could allow a remote, unauthe

References

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