CVE-2020-23659: WebPort-v1.19.17121 is affected by Cross Site Scripting (XSS) on the "connections" feature.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2020-23659 is a medium-severity flaw (CVSS 5.4) affecting web port. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WebPort-v1.19.17121 is affected by Cross Site Scripting (XSS) on the "connections" feature.

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	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: webport

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

Am I affected?

Timeline

2020-08-26 18:15 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

webport web port DOWNGRADE

Affected: 1.19.17121

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.19.17121

1. Check installed version

apt-cache policy web-port || rpm -q web-port || web-port --version

2. No fixed release: DOWNGRADE to a release before 1.19.17121 (Debian / Ubuntu)

apt-cache madison web-port sudo apt install web-port=<VERSION_BEFORE_1.19.17121> sudo apt-mark hold web-port

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

dnf --showduplicates list web-port sudo dnf downgrade web-port-<VERSION_BEFORE_1.19.17121> sudo dnf versionlock add web-port

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-2020-23659?

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

Is CVE-2020-23659 being exploited?

CVE-2020-23659 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-2020-23659 affect?

CVE-2020-23659 affects web port. Severity is medium (CVSS 5.4). WebPort-v1.19.17121 is affected by Cross Site Scripting (XSS) on the "connections" feature.

How urgent is CVE-2020-23659?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2020-18668 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) vulnerabililty in WebPort <=1.19.1 via the description parameter to script/listcall
CVE-2020-18665 MEDIUM 5.3 UPGRADE Directory Traversal vulnerability in WebPort <=1.19.1 in tags of system settings.
CVE-2020-18664 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) vulnerability in WebPort <=1.19.1via the connection name parameter in type-conn.
CVE-2019-12461 MEDIUM 6.1 DOWNGRADE Web Port 1.19.1 allows XSS via the /log type parameter.
CVE-2019-12460 MEDIUM 6.1 DOWNGRADE Web Port 1.19.1 allows XSS via the /access/setup type parameter.

References

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