CVE-2021-3294: CASAP Automated Enrollment System 1.0 is affected by cross-site scripting (XSS) in users.php

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MEDIUM 5.4DOWNGRADE

CVE-2021-3294 is a medium-severity flaw (CVSS 5.4) affecting casap automated enrollment system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CASAP Automated Enrollment System 1.0 is affected by cross-site scripting (XSS) in users.php. An attacker can steal a cookie to perform user redirection to a malicious website.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	2.8% (top 13%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-02-09
Last modified	2026-07-09

Publisher (CNA): MITRE · Vendor: casap automated enrollment system project

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-02-09 00:15 UTCPublished CVE record published
2026-07-09 01:17 UTCUpdated Record last modified

casap automated enrollment system project casap automated enrollment 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 casap-automated-enrollment-system || rpm -q casap-automated-enrollment-system || casap-automated-enrollment-system --version

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

apt-cache madison casap-automated-enrollment-system sudo apt install casap-automated-enrollment-system=<VERSION_BEFORE_1.0> sudo apt-mark hold casap-automated-enrollment-system

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

dnf --showduplicates list casap-automated-enrollment-system sudo dnf downgrade casap-automated-enrollment-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add casap-automated-enrollment-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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: CASAP Automated Enrollment System 1.0 - 'First Name' Stored XSS

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-2021-3294?

casap automated enrollment system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-3294 being exploited?

CVE-2021-3294 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-2021-3294 affect?

CVE-2021-3294 affects casap automated enrollment system. Severity is medium (CVSS 5.4). CASAP Automated Enrollment System 1.0 is affected by cross-site scripting (XSS) in users.php. An attacker can steal a cookie to perform user redirection to a malicious website.

How urgent is CVE-2021-3294?

Priority 46/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-27332 MEDIUM 6.1 DOWNGRADE Cross-site scripting (XSS) vulnerability in SourceCodester CASAP Automated Enrollment System v 1.0 allows remo
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CVE-2021-27129 MEDIUM 5.4 DOWNGRADE CASAP Automated Enrollment System version 1.0 contains a cross-site scripting (XSS) vulnerability through the
CVE-2021-26230 MEDIUM 6.1 DOWNGRADE Cross-site scripting (XSS) vulnerability in SourceCodester CASAP Automated Enrollment System v 1.0 allows remo
CVE-2021-26229 CRITICAL 9.8 DOWNGRADE SQL injection vulnerability in SourceCodester CASAP Automated Enrollment System v 1.0 allows remote attackers

References

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