CVE-2013-6794: Cross-site scripting (XSS) vulnerability in the Calendar module in Olat 7.8.0.1 (b20130821 N1) allows remote a

Routine

MEDIUM 4.3DOWNGRADE

CVE-2013-6794 is a medium-severity flaw (CVSS 4.3) affecting olat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the Calendar module in Olat 7.8.0.1 (b20130821 N1) allows remote attackers to inject arbitrary web script or HTML via the Location field. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-79
Published	2013-11-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: olat

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

Am I affected?

Timeline

2013-11-14 20:55 UTCPublished CVE record published
2026-06-17 00:00 UTCUpdated Record last modified

olat olat DOWNGRADE

Affected: 7.8.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.8.0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 7.8.0.1 (Debian / Ubuntu)

apt-cache madison olat sudo apt install olat=<VERSION_BEFORE_7.8.0.1> sudo apt-mark hold olat

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

dnf --showduplicates list olat sudo dnf downgrade olat-<VERSION_BEFORE_7.8.0.1> sudo dnf versionlock add olat

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Olat CMS 7.8.0.1 - Persistent Cross-Site Scripting

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-2013-6794?

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

Is CVE-2013-6794 being exploited?

CVE-2013-6794 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-2013-6794 affect?

CVE-2013-6794 affects olat. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the Calendar module in Olat 7.8.0.1 (b20130821 N1) allows remote attackers to inject arbitrary web script or HTML via the Location field. NOTE: the provenance of this information is unknown; the

How urgent is CVE-2013-6794?

Priority 38/100. Public exploit reference

Related CVEs

CVE-2013-6793 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in the Calendar module in Olat 7.8.0.1 (b20130821 N1) allo

References

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