CVE-2019-12240: The Virim plugin 0.4 for WordPress allows Insecure Deserialization via s_values, t_values, or c_values in grap

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2019-12240 is a critical-severity flaw (CVSS 9.8) affecting virim. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Virim plugin 0.4 for WordPress allows Insecure Deserialization via s_values, t_values, or c_values in graph.php.

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	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-502
Published	2019-05-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: virim project

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

Am I affected?

Timeline

2019-05-20 20:29 UTCPublished CVE record published
2026-06-17 02:14 UTCUpdated Record last modified

virim project virim DOWNGRADE

Affected: 0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.4 (Debian / Ubuntu)

apt-cache madison virim sudo apt install virim=<VERSION_BEFORE_0.4> sudo apt-mark hold virim

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

dnf --showduplicates list virim sudo dnf downgrade virim-<VERSION_BEFORE_0.4> sudo dnf versionlock add virim

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-2019-12240?

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

Is CVE-2019-12240 being exploited?

CVE-2019-12240 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-2019-12240 affect?

CVE-2019-12240 affects virim. Severity is critical (CVSS 9.8). The Virim plugin 0.4 for WordPress allows Insecure Deserialization via s_values, t_values, or c_values in graph.php.

How urgent is CVE-2019-12240?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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