CVE-2021-25008: The Code Snippets WordPress plugin before 2.14.3 does not escape the snippets-safe-mode parameter before outpu

Q: How do I fix CVE-2021-25008?

code snippets: upgrade to 2.14.3. Exact commands for each OS are on this page.

Q: Is CVE-2021-25008 being exploited?

CVE-2021-25008 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-2021-25008 affect?

CVE-2021-25008 affects code snippets. Severity is medium (CVSS 6.1). The Code Snippets WordPress plugin before 2.14.3 does not escape the snippets-safe-mode parameter before outputting it back in attributes, leading to a Reflected Cross-Site Scripting issue

Q: How urgent is CVE-2021-25008?

Priority 47/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-25008 is a medium-severity flaw (CVSS 6.1) affecting code snippets. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Code Snippets WordPress plugin before 2.14.3 does not escape the snippets-safe-mode parameter before outputting it back in attributes, leading to a Reflected Cross-Site Scripting issue

Why this priority

Public exploit reference

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	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-01-24
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: codesnippets

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

Am I affected?

Timeline

2022-01-24 08:15 UTCPublished CVE record published
2026-06-17 03:41 UTCUpdated Record last modified

codesnippets code snippets UPGRADE

Affected: < 2.14.3

Fixed in: 2.14.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy code-snippets || rpm -q code-snippets || code-snippets --version

2. UPGRADE to 2.14.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade code-snippets

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade code-snippets

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: The Code Snippets WordPress Plugin < 2.14.3 - Cross-Site Scripting

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-2021-25008?

code snippets: upgrade to 2.14.3. Exact commands for each OS are on this page.

Is CVE-2021-25008 being exploited?

CVE-2021-25008 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-2021-25008 affect?

CVE-2021-25008 affects code snippets. Severity is medium (CVSS 6.1). The Code Snippets WordPress plugin before 2.14.3 does not escape the snippets-safe-mode parameter before outputting it back in attributes, leading to a Reflected Cross-Site Scripting issue

How urgent is CVE-2021-25008?

Priority 47/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-47666 MEDIUM 4.3 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in Code Snippets Pro Code Snippets.This issue affects Code Sni
CVE-2022-25617 MEDIUM 4.7 UPGRADE Reflected Cross-Site Scripting (XSS) vulnerability in Code Snippets plugin <= 2.14.3 at WordPress via &orderby

References

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