CVE-2018-20508: CrashFix 1.0.4 has SQL Injection via the User[status] parameter

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-20508 is a critical-severity flaw (CVSS 9.8) affecting crashfix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CrashFix 1.0.4 has SQL Injection via the User[status] parameter. This is related to actionIndex in UserController.php, and the protected\models\User.php search() function.

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	1.5% (top 27%)
CISA exploited list	No
Weakness	CWE-89
Published	2018-12-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: crashfix project

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

Am I affected?

Timeline

2018-12-27 13:29 UTCPublished CVE record published
2026-06-17 01:52 UTCUpdated Record last modified

crashfix project crashfix DOWNGRADE

Affected: 1.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.4 (Debian / Ubuntu)

apt-cache madison crashfix sudo apt install crashfix=<VERSION_BEFORE_1.0.4> sudo apt-mark hold crashfix

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

dnf --showduplicates list crashfix sudo dnf downgrade crashfix-<VERSION_BEFORE_1.0.4> sudo dnf versionlock add crashfix

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-2018-20508?

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

Is CVE-2018-20508 being exploited?

CVE-2018-20508 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-2018-20508 affect?

CVE-2018-20508 affects crashfix. Severity is critical (CVSS 9.8). CrashFix 1.0.4 has SQL Injection via the User[status] parameter. This is related to actionIndex in UserController.php, and the protected\models\User.php search() function.

How urgent is CVE-2018-20508?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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