CVE-2025-63713: Cross-Site Scripting (XSS) vulnerability in SourceCodester "MatchMaster" 1.0 allows remote attackers to inject

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-63713 is a medium-severity flaw (CVSS 6.1) affecting matching type test. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-Site Scripting (XSS) vulnerability in SourceCodester "MatchMaster" 1.0 allows remote attackers to inject arbitrary web script or HTML via crafted input in the custom test creation feature. The vulnerability exists because the application fails to properly sanitize user-supplied input in test titles and matching pair items before rendering them in the DOM during test execution.

Why this priority

Public exploit reference

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	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: remyandrade

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

Am I affected?

Timeline

2025-11-07 18:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

remyandrade matching type test 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 matching-type-test || rpm -q matching-type-test || matching-type-test --version

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

apt-cache madison matching-type-test sudo apt install matching-type-test=<VERSION_BEFORE_1.0> sudo apt-mark hold matching-type-test

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

dnf --showduplicates list matching-type-test sudo dnf downgrade matching-type-test-<VERSION_BEFORE_1.0> sudo dnf versionlock add matching-type-test

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-2025-63713?

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

Is CVE-2025-63713 being exploited?

CVE-2025-63713 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-2025-63713 affect?

CVE-2025-63713 affects matching type test. Severity is medium (CVSS 6.1). Cross-Site Scripting (XSS) vulnerability in SourceCodester "MatchMaster" 1.0 allows remote attackers to inject arbitrary web script or HTML via crafted input in the custom test creation feature. The vulnerability exists because the applicat

How urgent is CVE-2025-63713?

Priority 34/100. Public exploit reference

References

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