CVE-2025-63708: Cross-Site Scripting (XSS) vulnerability exists in SourceCodester AI Font Matcher (nid=18425, 2025-10-10) that

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-63708 is a medium-severity flaw (CVSS 6.1) affecting ai font matcher. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-Site Scripting (XSS) vulnerability exists in SourceCodester AI Font Matcher (nid=18425, 2025-10-10) that allows remote attackers to execute arbitrary JavaScript in victims' browsers. The vulnerability occurs in the webfonts API handling mechanism where font family names are not properly sanitized. An attacker can intercept fetch requests to the webfonts endpoint and inject malicious JavaScript payloads through font family names, resulting i

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	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-17
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

2025-11-17 16:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

remyandrade ai font matcher DOWNGRADE

Affected: 2025-10-10

Fixed in: no fixed release known

Safe to downgrade to: a release before 2025-10-10

1. Check installed version

apt-cache policy ai-font-matcher || rpm -q ai-font-matcher || ai-font-matcher --version

2. No fixed release: DOWNGRADE to a release before 2025-10-10 (Debian / Ubuntu)

apt-cache madison ai-font-matcher sudo apt install ai-font-matcher=<VERSION_BEFORE_2025-10-10> sudo apt-mark hold ai-font-matcher

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

dnf --showduplicates list ai-font-matcher sudo dnf downgrade ai-font-matcher-<VERSION_BEFORE_2025-10-10> sudo dnf versionlock add ai-font-matcher

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-2025-63708?

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

Is CVE-2025-63708 being exploited?

CVE-2025-63708 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-2025-63708 affect?

CVE-2025-63708 affects ai font matcher. Severity is medium (CVSS 6.1). Cross-Site Scripting (XSS) vulnerability exists in SourceCodester AI Font Matcher (nid=18425, 2025-10-10) that allows remote attackers to execute arbitrary JavaScript in victims' browsers. The vulnerability occurs in the webfonts API handli

How urgent is CVE-2025-63708?

Priority 32/100. Public exploit reference

References

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