CVE-2013-2637: A Cross-Site Scripting (XSS) Vulnerability exists in OTRS ITSM prior to 3.2.4, 3.1.8, and 3.0.7 and FAQ prior

This month

MEDIUM 6.1UPGRADEUPGRADEMITIGATE

CVE-2013-2637 is a medium-severity flaw (CVSS 6.1) affecting faq, otrs itsm, opensuse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross-Site Scripting (XSS) Vulnerability exists in OTRS ITSM prior to 3.2.4, 3.1.8, and 3.0.7 and FAQ prior to 2.1.4 and 2.0.8 via changes, workorder items, and FAQ articles, which could let a remote malicious user execute arbitrary code.

Why this priority

EPSS top 9%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	4.3% (top 9%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-02-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: opensuse · otrs

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-12 17:15 UTCPublished CVE record published
2026-06-16 23:53 UTCUpdated Record last modified

otrs faq UPGRADE

Affected: < 2.0.8 · >= 2.1.0 and < 2.1.4

Fixed in: 2.0.8, 2.1.4

Safe to downgrade to: a release before 2.1.0

1. Check installed version

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

2. UPGRADE to 2.0.8 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade faq

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 2.1.0 (Debian / Ubuntu)

apt-cache madison faq sudo apt install faq=<VERSION_BEFORE_2.1.0> sudo apt-mark hold faq

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

dnf --showduplicates list faq sudo dnf downgrade faq-<VERSION_BEFORE_2.1.0> sudo dnf versionlock add faq

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.

otrs otrs itsm UPGRADE

Affected: < 3.0.7 · >= 3.1.0 and < 3.1.8 · >= 3.2.0 and < 3.2.4

Fixed in: 3.0.7, 3.1.8, 3.2.4

Safe to downgrade to: a release before 3.1.0

1. Check installed version

apt-cache policy otrs-itsm || rpm -q otrs-itsm || otrs-itsm --version

2. UPGRADE to 3.0.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade otrs-itsm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade otrs-itsm

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 3.1.0 (Debian / Ubuntu)

apt-cache madison otrs-itsm sudo apt install otrs-itsm=<VERSION_BEFORE_3.1.0> sudo apt-mark hold otrs-itsm

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

dnf --showduplicates list otrs-itsm sudo dnf downgrade otrs-itsm-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add otrs-itsm

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.

opensuse opensuse MITIGATE

Affected: 12.2 · 12.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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: OTRS 3.x - FAQ Module 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-2013-2637?

faq: upgrade to 2.0.8, 2.1.4; otrs itsm: upgrade to 3.0.7, 3.1.8, 3.2.4; opensuse: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-2637 being exploited?

CVE-2013-2637 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-2013-2637 affect?

CVE-2013-2637 affects faq, otrs itsm, opensuse. Severity is medium (CVSS 6.1). A Cross-Site Scripting (XSS) Vulnerability exists in OTRS ITSM prior to 3.2.4, 3.1.8, and 3.0.7 and FAQ prior to 2.1.4 and 2.0.8 via changes, workorder items, and FAQ articles, which could let a remote malicious user execute arbitrary code.

How urgent is CVE-2013-2637?

Priority 49/100. EPSS top 9%: very likely to be exploited; Public exploit reference

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References

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