CVE-2023-49974: A cross-site scripting (XSS) vulnerability in Customer Support System v1 allows attackers to execute arbitrary

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-49974 is a medium-severity flaw (CVSS 6.1) affecting customer support system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A cross-site scripting (XSS) vulnerability in Customer Support System v1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the contact parameter at /customer_support/index.php?page=customer_list.

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 61%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-03-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: oretnom23

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

Am I affected?

Timeline

2024-03-06 01:15 UTCPublished CVE record published
2026-06-17 06:36 UTCUpdated Record last modified

oretnom23 customer support system 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 customer-support-system || rpm -q customer-support-system || customer-support-system --version

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

apt-cache madison customer-support-system sudo apt install customer-support-system=<VERSION_BEFORE_1.0> sudo apt-mark hold customer-support-system

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

dnf --showduplicates list customer-support-system sudo dnf downgrade customer-support-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add customer-support-system

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-2023-49974?

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

Is CVE-2023-49974 being exploited?

CVE-2023-49974 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-2023-49974 affect?

CVE-2023-49974 affects customer support system. Severity is medium (CVSS 6.1). A cross-site scripting (XSS) vulnerability in Customer Support System v1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the contact parameter at /customer_support/index.php?page=customer_list.

How urgent is CVE-2023-49974?

Priority 36/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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