CVE-2020-13992: An issue was discovered in Mods for HESK 3.1.0 through 2019.1.0

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MEDIUM 6.1UPGRADE

CVE-2020-13992 is a medium-severity flaw (CVSS 6.1) affecting mods for hesk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Mods for HESK 3.1.0 through 2019.1.0. A Stored XSS issue allows remote unauthenticated attackers to abuse a helpdesk user's logged in session. A user with sufficient privileges to change their login-page image must open a crafted ticket.

Why this priority

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	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-07-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mods-for-hesk

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

Am I affected?

Timeline

2020-07-09 15:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

mods-for-hesk mods for hesk UPGRADE

Affected: >= 3.1.0 and <= 2019.1.0

Fixed in: newer than 2019.1.0

Safe to downgrade to: a release before 3.1.0

1. Check installed version

apt-cache policy mods-for-hesk || rpm -q mods-for-hesk || mods-for-hesk --version

2. UPGRADE to newer than 2019.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mods-for-hesk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mods-for-hesk

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 mods-for-hesk sudo apt install mods-for-hesk=<VERSION_BEFORE_3.1.0> sudo apt-mark hold mods-for-hesk

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

dnf --showduplicates list mods-for-hesk sudo dnf downgrade mods-for-hesk-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add mods-for-hesk

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-2020-13992?

mods for hesk: upgrade to newer than 2019.1.0. Exact commands for each OS are on this page.

Is CVE-2020-13992 being exploited?

CVE-2020-13992 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-2020-13992 affect?

CVE-2020-13992 affects mods for hesk. Severity is medium (CVSS 6.1). An issue was discovered in Mods for HESK 3.1.0 through 2019.1.0. A Stored XSS issue allows remote unauthenticated attackers to abuse a helpdesk user's logged in session. A user with sufficient privileges to change their login-page image mus

How urgent is CVE-2020-13992?

Priority 43/100. Public exploit reference

Related CVEs

CVE-2020-13994 HIGH 8.8 UPGRADE An issue was discovered in Mods for HESK 3.1.0 through 2019.1.0
CVE-2020-13993 HIGH 7.5 UPGRADE An issue was discovered in Mods for HESK 3.1.0 through 2019.1.0

References

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