CVE-2024-4993: Vulnerability in SiAdmin 1.1 that allows XSS via the /show.php query parameter

Routine

MEDIUM 6.3DOWNGRADE

CVE-2024-4993 is a medium-severity flaw (CVSS 6.3) affecting siadmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in SiAdmin 1.1 that allows XSS via the /show.php query parameter. This vulnerability could allow a remote attacker to send a specially crafted URL to an authenticated user and thereby steal their cookie session credentials.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-05-16
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: ansanwan

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

Am I affected?

Timeline

2024-05-16 12:15 UTCPublished CVE record published
2026-06-17 08:03 UTCUpdated Record last modified

ansanwan siadmin DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison siadmin sudo apt install siadmin=<VERSION_BEFORE_1.1> sudo apt-mark hold siadmin

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

dnf --showduplicates list siadmin sudo dnf downgrade siadmin-<VERSION_BEFORE_1.1> sudo dnf versionlock add siadmin

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-2024-4993?

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

Is CVE-2024-4993 being exploited?

CVE-2024-4993 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-2024-4993 affect?

CVE-2024-4993 affects siadmin. Severity is medium (CVSS 6.3). Vulnerability in SiAdmin 1.1 that allows XSS via the /show.php query parameter. This vulnerability could allow a remote attacker to send a specially crafted URL to an authenticated user and thereby steal their cookie session credentials.

How urgent is CVE-2024-4993?

Priority 28/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-4992 CRITICAL 9.8 DOWNGRADE Vulnerability in SiAdmin 1.1 that allows SQL injection via the /modul/mod_kuliah/aksi_kuliah.php parameter in
CVE-2024-4991 CRITICAL 9.8 DOWNGRADE Vulnerability in SiAdmin 1.1 that allows SQL injection via the /modul/mod_pass/aksi_pass.php parameter in nama

References

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