CVE-2023-35858: XPath Injection vulnerabilities in the blog and RSS functions of Modern Campus - Omni CMS 2023.1 allow a remot

This week

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2023-35858 is a medium-severity flaw (CVSS 5.3) affecting omni cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XPath Injection vulnerabilities in the blog and RSS functions of Modern Campus - Omni CMS 2023.1 allow a remote, unauthenticated attacker to obtain application information.

Why this priority

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	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-91
Published	2024-06-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: moderncampus

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

Am I affected?

Timeline

2024-06-13 16:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

moderncampus omni cms DOWNGRADE

Affected: 2023.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2023.1 (Debian / Ubuntu)

apt-cache madison omni-cms sudo apt install omni-cms=<VERSION_BEFORE_2023.1> sudo apt-mark hold omni-cms

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

dnf --showduplicates list omni-cms sudo dnf downgrade omni-cms-<VERSION_BEFORE_2023.1> sudo dnf versionlock add omni-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-2023-35858?

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

Is CVE-2023-35858 being exploited?

CVE-2023-35858 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-2023-35858 affect?

CVE-2023-35858 affects omni cms. Severity is medium (CVSS 5.3). XPath Injection vulnerabilities in the blog and RSS functions of Modern Campus - Omni CMS 2023.1 allow a remote, unauthenticated attacker to obtain application information.

How urgent is CVE-2023-35858?

Priority 39/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-35860 MEDIUM 5.3 DOWNGRADE A Directory Traversal vulnerability in Modern Campus - Omni CMS 2023.1 allows a remote, unauthenticated attack
CVE-2023-35859 MEDIUM 6.1 DOWNGRADE A Reflected Cross-Site Scripting (XSS) vulnerability in the blog function of Modern Campus - Omni CMS 2023.1 a

References

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