CVE-2020-23718: Cross site scripting (XSS) vulnerability in xujinliang zibbs 1.0, allows attackers to execute arbitrary code v

This month

CRITICAL 9.6DOWNGRADE

CVE-2020-23718 is a critical-severity flaw (CVSS 9.6) affecting zibbs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross site scripting (XSS) vulnerability in xujinliang zibbs 1.0, allows attackers to execute arbitrary code via the route parameter to index.php.

Why this priority

Critical severity
Public exploit reference

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

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-11-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: zibbs project

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

Am I affected?

Timeline

2021-11-02 18:15 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

zibbs project zibbs DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison zibbs sudo apt install zibbs=<VERSION_BEFORE_1.0> sudo apt-mark hold zibbs

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

dnf --showduplicates list zibbs sudo dnf downgrade zibbs-<VERSION_BEFORE_1.0> sudo dnf versionlock add zibbs

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-2020-23718?

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

Is CVE-2020-23718 being exploited?

CVE-2020-23718 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-2020-23718 affect?

CVE-2020-23718 affects zibbs. Severity is critical (CVSS 9.6). Cross site scripting (XSS) vulnerability in xujinliang zibbs 1.0, allows attackers to execute arbitrary code via the route parameter to index.php.

How urgent is CVE-2020-23718?

Priority 57/100. Critical severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2020-23719 CRITICAL 9.6 DOWNGRADE Cross site scripting (XSS) vulnerability in application/controllers/AdminController.php in xujinliang zibbs 1.

References

← Back to latest CVEs