CVE-2023-27241: SourceCodester Water Billing System v1.0 was discovered to contain a cross-site scripting (XSS) vulnerability

Routine

MEDIUM 6.1DOWNGRADE

CVE-2023-27241 is a medium-severity flaw (CVSS 6.1) affecting water billing system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SourceCodester Water Billing System v1.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the lastname text box under the Add Client module.

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 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-03-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: water billing system project

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

Am I affected?

Timeline

2023-03-27 17:15 UTCPublished CVE record published
2026-06-17 05:44 UTCUpdated Record last modified

water billing system project water billing 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 water-billing-system || rpm -q water-billing-system || water-billing-system --version

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

apt-cache madison water-billing-system sudo apt install water-billing-system=<VERSION_BEFORE_1.0> sudo apt-mark hold water-billing-system

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

dnf --showduplicates list water-billing-system sudo dnf downgrade water-billing-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add water-billing-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-2023-27241?

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

Is CVE-2023-27241 being exploited?

CVE-2023-27241 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-2023-27241 affect?

CVE-2023-27241 affects water billing system. Severity is medium (CVSS 6.1). SourceCodester Water Billing System v1.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the lastname text box under the Add Client module.

How urgent is CVE-2023-27241?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2025-9706 HIGH 7.3 DOWNGRADE A security vulnerability has been detected in SourceCodester Water Billing System 1.0
CVE-2025-9704 HIGH 7.3 DOWNGRADE A security flaw has been discovered in SourceCodester Water Billing System 1.0
CVE-2025-9705 HIGH 7.3 DOWNGRADE A weakness has been identified in SourceCodester Water Billing System 1.0
CVE-2023-7097 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical has been found in code-projects Water Billing System 1.0
CVE-2022-30462 MEDIUM 5.4 DOWNGRADE Water-billing-management-system v1.0 is affected by: Cross Site Scripting (XSS) via /wbms/classes/Users.php?f=

References

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