CVE-2023-2635: The Call Now Accessibility Button WordPress plugin before 1.1 does not sanitise and escape some of its setting

Routine

MEDIUM 4.8DOWNGRADE

CVE-2023-2635 is a medium-severity flaw (CVSS 4.8) affecting call now accessibility button. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Call Now Accessibility Button WordPress plugin before 1.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Published	2023-07-10
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: stpetedesign

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

Am I affected?

Timeline

2023-07-10 16:15 UTCPublished CVE record published
2026-06-17 05:53 UTCUpdated Record last modified

stpetedesign call now accessibility button DOWNGRADE

Affected: 1.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.2

1. Check installed version

apt-cache policy call-now-accessibility-button || rpm -q call-now-accessibility-button || call-now-accessibility-button --version

2. No fixed release: DOWNGRADE to a release before 1.0.2 (Debian / Ubuntu)

apt-cache madison call-now-accessibility-button sudo apt install call-now-accessibility-button=<VERSION_BEFORE_1.0.2> sudo apt-mark hold call-now-accessibility-button

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

dnf --showduplicates list call-now-accessibility-button sudo dnf downgrade call-now-accessibility-button-<VERSION_BEFORE_1.0.2> sudo dnf versionlock add call-now-accessibility-button

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-2023-2635?

call now accessibility button: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-2635 being exploited?

CVE-2023-2635 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-2023-2635 affect?

CVE-2023-2635 affects call now accessibility button. Severity is medium (CVSS 4.8). The Call Now Accessibility Button WordPress plugin before 1.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_ht

How urgent is CVE-2023-2635?

Priority 33/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-2028 MEDIUM 4.8 UPGRADE The Call Now Accessibility Button WordPress plugin before 1.1 does not properly sanitize some of its settings,
CVE-2023-28933 MEDIUM 5.9 UPGRADE Auth

References

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