CVE-2024-42749: Cross Site Scripting vulnerability in Alto CMS v.1.1.13 allows a local attacker to execute arbitrary code via

Routine

MEDIUM 6.1DOWNGRADE

CVE-2024-42749 is a medium-severity flaw (CVSS 6.1) affecting alto cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting vulnerability in Alto CMS v.1.1.13 allows a local attacker to execute arbitrary code via a crafted script.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: altocms

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

Am I affected?

Timeline

2025-11-14 16:15 UTCPublished CVE record published
2026-06-17 07:49 UTCUpdated Record last modified

altocms alto cms DOWNGRADE

Affected: 1.1.13

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.13

1. Check installed version

apt-cache policy alto-cms || rpm -q alto-cms || alto-cms --version

2. No fixed release: DOWNGRADE to a release before 1.1.13 (Debian / Ubuntu)

apt-cache madison alto-cms sudo apt install alto-cms=<VERSION_BEFORE_1.1.13> sudo apt-mark hold alto-cms

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

dnf --showduplicates list alto-cms sudo dnf downgrade alto-cms-<VERSION_BEFORE_1.1.13> sudo dnf versionlock add alto-cms

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-2024-42749?

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

Is CVE-2024-42749 being exploited?

CVE-2024-42749 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-2024-42749 affect?

CVE-2024-42749 affects alto cms. Severity is medium (CVSS 6.1). Cross Site Scripting vulnerability in Alto CMS v.1.1.13 allows a local attacker to execute arbitrary code via a crafted script.

How urgent is CVE-2024-42749?

Priority 31/100. Public exploit reference

References

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