CVE-2023-6673: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in National

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-6673 is a medium-severity flaw (CVSS 6.1) affecting cybermath. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in National Keep Cyber Security Services CyberMath allows Reflected XSS. This issue affects CyberMath: from v.1.4 before v.1.5.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-02-02
Last modified	2026-06-17

Publisher (CNA): Computer Emergency Response Team of the Republic of Turkey · Vendor: nationalkeep

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

Am I affected?

Timeline

2024-02-02 13:15 UTCPublished CVE record published
2026-06-17 06:51 UTCUpdated Record last modified

nationalkeep cybermath DOWNGRADE

Affected: 1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4 (Debian / Ubuntu)

apt-cache madison cybermath sudo apt install cybermath=<VERSION_BEFORE_1.4> sudo apt-mark hold cybermath

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

dnf --showduplicates list cybermath sudo dnf downgrade cybermath-<VERSION_BEFORE_1.4> sudo dnf versionlock add cybermath

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-2023-6673?

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

Is CVE-2023-6673 being exploited?

CVE-2023-6673 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-2023-6673 affect?

CVE-2023-6673 affects cybermath. Severity is medium (CVSS 6.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in National Keep Cyber Security Services CyberMath allows Reflected XSS. This issue affects CyberMath: from v.1.4 before v.1.5.

How urgent is CVE-2023-6673?

Priority 28/100. No elevated risk signals yet.

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References

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