CVE-2023-47876: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Perfmatt

Q: How do I fix CVE-2023-47876?

perfmatters: upgrade to newer than 2.1.6. Exact commands for each OS are on this page.

Q: Is CVE-2023-47876 being exploited?

CVE-2023-47876 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-47876 affect?

CVE-2023-47876 affects perfmatters. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Perfmatters allows Reflected XSS.This issue affects Perfmatters: from n/a through 2.1.6.

Routine

HIGH 7.1UPGRADE

CVE-2023-47876 is a high-severity flaw (CVSS 7.1) affecting perfmatters. 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 Perfmatters allows Reflected XSS.This issue affects Perfmatters: from n/a through 2.1.6.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-11-30
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: perfmatters

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

Am I affected?

Timeline

2023-11-30 17:15 UTCPublished CVE record published
2026-06-17 06:33 UTCUpdated Record last modified

perfmatters perfmatters UPGRADE

Affected: <= 2.1.6

Fixed in: newer than 2.1.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.1.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade perfmatters

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade perfmatters

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-47876?

perfmatters: upgrade to newer than 2.1.6. Exact commands for each OS are on this page.

Is CVE-2023-47876 being exploited?

CVE-2023-47876 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-2023-47876 affect?

CVE-2023-47876 affects perfmatters. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Perfmatters allows Reflected XSS.This issue affects Perfmatters: from n/a through 2.1.6.

How urgent is CVE-2023-47876?

Priority 34/100. High severity

Related CVEs

CVE-2023-47877 MEDIUM 6.5 UPGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Perfmatt
CVE-2023-47875 MEDIUM 5.4 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in Perfmatters allows Cross Site Request Forgery.This issue af
CVE-2023-47874 MEDIUM 5.4 UPGRADE Missing Authorization vulnerability in Perfmatters.This issue affects Perfmatters: from n/a through 2.1.6.

References

← Back to latest CVEs