CVE-2024-2729: The Otter Blocks WordPress plugin before 2.6.6 does not properly escape its mainHeadings blocks' attribute be

Q: How do I fix CVE-2024-2729?

otter blocks: upgrade to 2.6.6. Exact commands for each OS are on this page.

Q: Is CVE-2024-2729 being exploited?

CVE-2024-2729 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-2024-2729 affect?

CVE-2024-2729 affects otter blocks. Severity is medium (CVSS 6.1). The Otter Blocks WordPress plugin before 2.6.6 does not properly escape its mainHeadings blocks' attribute before appending it to the final rendered block, allowing contributors to conduct Stored XSS attacks.

Q: How urgent is CVE-2024-2729?

Priority 35/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2024-2729 is a medium-severity flaw (CVSS 6.1) affecting otter blocks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Otter Blocks WordPress plugin before 2.6.6 does not properly escape its mainHeadings blocks' attribute before appending it to the final rendered block, allowing contributors to conduct Stored XSS attacks.

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	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-04-18
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: themeisle

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

Am I affected?

Timeline

2024-04-18 05:15 UTCPublished CVE record published
2026-06-17 07:25 UTCUpdated Record last modified

themeisle otter blocks UPGRADE

Affected: < 2.6.6

Fixed in: 2.6.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy otter-blocks || rpm -q otter-blocks || otter-blocks --version

2. UPGRADE to 2.6.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade otter-blocks

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade otter-blocks

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-2024-2729?

otter blocks: upgrade to 2.6.6. Exact commands for each OS are on this page.

Is CVE-2024-2729 being exploited?

CVE-2024-2729 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-2024-2729 affect?

CVE-2024-2729 affects otter blocks. Severity is medium (CVSS 6.1). The Otter Blocks WordPress plugin before 2.6.6 does not properly escape its mainHeadings blocks' attribute before appending it to the final rendered block, allowing contributors to conduct Stored XSS attacks.

How urgent is CVE-2024-2729?

Priority 35/100. Public exploit reference

Software pages

WordPress vulnerabilities

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References

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