CVE-2024-56923: Stored Cross-Site Scripting (XSS) Vulnerability in the Categorization Option of My Subscriptions Functionality

Q: How urgent is CVE-2024-56923?

Priority 30/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2024-56923 is a medium-severity flaw (CVSS 5.4) affecting silverpeas. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stored Cross-Site Scripting (XSS) Vulnerability in the Categorization Option of My Subscriptions Functionality in Silverpeas Core 6.3.1 <= 6.4.1 allows a remote attacker to execute arbitrary JavaScript code. This is achieved by injecting a malicious payload into the Name field of a subscription. The attack can lead to session hijacking, data theft, or unauthorized actions when an admin user views the affected subscription.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-01-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: silverpeas

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

Am I affected?

Timeline

2025-01-22 21:15 UTCPublished CVE record published
2026-06-17 08:13 UTCUpdated Record last modified

silverpeas silverpeas UPGRADE

Affected: >= 6.3.1 and < 6.4.2

Fixed in: 6.4.2

Safe to downgrade to: a release before 6.3.1

1. Check installed version

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

2. UPGRADE to 6.4.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade silverpeas

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 6.3.1 (Debian / Ubuntu)

apt-cache madison silverpeas sudo apt install silverpeas=<VERSION_BEFORE_6.3.1> sudo apt-mark hold silverpeas

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

dnf --showduplicates list silverpeas sudo dnf downgrade silverpeas-<VERSION_BEFORE_6.3.1> sudo dnf versionlock add silverpeas

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-2024-56923?

silverpeas: upgrade to 6.4.2. Exact commands for each OS are on this page.

Is CVE-2024-56923 being exploited?

CVE-2024-56923 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-2024-56923 affect?

CVE-2024-56923 affects silverpeas. Severity is medium (CVSS 5.4). Stored Cross-Site Scripting (XSS) Vulnerability in the Categorization Option of My Subscriptions Functionality in Silverpeas Core 6.3.1 <= 6.4.1 allows a remote attacker to execute arbitrary JavaScript code. This is achieved by injecting a

How urgent is CVE-2024-56923?

Priority 30/100. Public exploit reference

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References

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