CVE-2024-1097: A stored cross-site scripting (XSS) vulnerability exists in craigk5n/webcalendar version 1.3.0

Routine

MEDIUM 5.4DOWNGRADE

CVE-2024-1097 is a medium-severity flaw (CVSS 5.4) affecting webcalendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stored cross-site scripting (XSS) vulnerability exists in craigk5n/webcalendar version 1.3.0. The vulnerability occurs in the 'Report Name' input field while creating a new report. An attacker can inject malicious scripts, which are then executed in the context of other users who view the report, potentially leading to the theft of user accounts and cookies.

Why this priority

Public exploit reference

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

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 72%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-11-15
Last modified	2026-06-17

Publisher (CNA): huntr.dev · Vendor: k5n

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

Am I affected?

Timeline

2024-11-15 11:15 UTCPublished CVE record published
2026-06-17 07:03 UTCUpdated Record last modified

k5n webcalendar DOWNGRADE

Affected: 1.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.0 (Debian / Ubuntu)

apt-cache madison webcalendar sudo apt install webcalendar=<VERSION_BEFORE_1.3.0> sudo apt-mark hold webcalendar

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

dnf --showduplicates list webcalendar sudo dnf downgrade webcalendar-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add webcalendar

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-2024-1097?

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

Is CVE-2024-1097 being exploited?

CVE-2024-1097 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-2024-1097 affect?

CVE-2024-1097 affects webcalendar. Severity is medium (CVSS 5.4). A stored cross-site scripting (XSS) vulnerability exists in craigk5n/webcalendar version 1.3.0. The vulnerability occurs in the 'Report Name' input field while creating a new report. An attacker can inject malicious scripts, which are then

How urgent is CVE-2024-1097?

Priority 31/100. Public exploit reference

References

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