CVE-2023-1978: The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scrip

Q: How do I fix CVE-2023-1978?

shiftcontroller: upgrade to newer than 4.9.25. Exact commands for each OS are on this page.

Q: Is CVE-2023-1978 being exploited?

CVE-2023-1978 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-1978 affect?

CVE-2023-1978 affects shiftcontroller. Severity is medium (CVSS 6.1). The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the query string in versions up to, and including, 4.9.25 due to insufficient input sanitization and output escaping. Thi

Q: How urgent is CVE-2023-1978?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2023-1978 is a medium-severity flaw (CVSS 6.1) affecting shiftcontroller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the query string in versions up to, and including, 4.9.25 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-06-09
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: plainware

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

Am I affected?

Timeline

2023-06-09 06:16 UTCPublished CVE record published
2026-06-17 05:29 UTCUpdated Record last modified

plainware shiftcontroller UPGRADE

Affected: <= 4.9.25

Fixed in: newer than 4.9.25

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.9.25 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade shiftcontroller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade shiftcontroller

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-1978?

shiftcontroller: upgrade to newer than 4.9.25. Exact commands for each OS are on this page.

Is CVE-2023-1978 being exploited?

CVE-2023-1978 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-2023-1978 affect?

CVE-2023-1978 affects shiftcontroller. Severity is medium (CVSS 6.1). The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the query string in versions up to, and including, 4.9.25 due to insufficient input sanitization and output escaping. Thi

How urgent is CVE-2023-1978?

Priority 31/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2024-9435 MEDIUM 6.1 UPGRADE The ShiftController Employee Shift Scheduling plugin for WordPress is vulnerable to Reflected Cross-Site Scrip
CVE-2023-29425 MEDIUM 5.4 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in plainware.Com ShiftController Employee Shift Scheduling plu
CVE-2023-29424 HIGH 7.1 UPGRADE Auth

References

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