CVE-2020-13116: OpenText Carbonite Server Backup Portal before 8.8.7 allows XSS by an authenticated user via policy creation.

Routine

MEDIUM 5.4UPGRADE

CVE-2020-13116 is a medium-severity flaw (CVSS 5.4) affecting server backup portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenText Carbonite Server Backup Portal before 8.8.7 allows XSS by an authenticated user via policy creation.

Why this priority

No elevated risk signals yet

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	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-01-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: carbonite

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

Am I affected?

Timeline

2021-01-12 19:15 UTCPublished CVE record published
2026-06-17 02:52 UTCUpdated Record last modified

carbonite server backup portal UPGRADE

Affected: >= 8.81 and < 8.87

Fixed in: 8.87

Safe to downgrade to: a release before 8.81

1. Check installed version

apt-cache policy server-backup-portal || rpm -q server-backup-portal || server-backup-portal --version

2. UPGRADE to 8.87 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade server-backup-portal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade server-backup-portal

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 8.81 (Debian / Ubuntu)

apt-cache madison server-backup-portal sudo apt install server-backup-portal=<VERSION_BEFORE_8.81> sudo apt-mark hold server-backup-portal

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

dnf --showduplicates list server-backup-portal sudo dnf downgrade server-backup-portal-<VERSION_BEFORE_8.81> sudo dnf versionlock add server-backup-portal

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-2020-13116?

server backup portal: upgrade to 8.87. Exact commands for each OS are on this page.

Is CVE-2020-13116 being exploited?

CVE-2020-13116 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-2020-13116 affect?

CVE-2020-13116 affects server backup portal. Severity is medium (CVSS 5.4). OpenText Carbonite Server Backup Portal before 8.8.7 allows XSS by an authenticated user via policy creation.

How urgent is CVE-2020-13116?

Priority 30/100. No elevated risk signals yet.

References

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