CVE-2017-17875: The JEXTN FAQ Pro extension 4.0.0 for Joomla! has SQL Injection via the id parameter in a view=category action

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2017-17875 is a critical-severity flaw (CVSS 9.8) affecting jextn faq pro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The JEXTN FAQ Pro extension 4.0.0 for Joomla! has SQL Injection via the id parameter in a view=category action.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-89
Published	2017-12-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: jextn

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

Am I affected?

Timeline

2017-12-27 17:08 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

jextn jextn faq pro DOWNGRADE

Affected: 4.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy jextn-faq-pro || rpm -q jextn-faq-pro || jextn-faq-pro --version

2. No fixed release: DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)

apt-cache madison jextn-faq-pro sudo apt install jextn-faq-pro=<VERSION_BEFORE_4.0.0> sudo apt-mark hold jextn-faq-pro

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

dnf --showduplicates list jextn-faq-pro sudo dnf downgrade jextn-faq-pro-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add jextn-faq-pro

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: Joomla! Component JEXTN FAQ Pro 4.0.0 - 'id' SQL Injection

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-2017-17875?

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

Is CVE-2017-17875 being exploited?

CVE-2017-17875 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-2017-17875 affect?

CVE-2017-17875 affects jextn faq pro. Severity is critical (CVSS 9.8). The JEXTN FAQ Pro extension 4.0.0 for Joomla! has SQL Injection via the id parameter in a view=category action.

How urgent is CVE-2017-17875?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Joomla vulnerabilities

References

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