CVE-2026-109933 Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
Medium 6.8
Published
Updated
Check this codebase for CVE-2026-109933 and fix it if it is affected.
What it is: CVE-2026-109933 is a medium-severity vulnerability in Unknown Otter Blocks, published on 23 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-109933 in the wild and no public exploit code.
Affected product: Unknown Otter Blocks. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-109933/ (Markdown: https://insights.sbomify.com/CVE-2026-109933/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-109933?
CVE-2026-109933 is a medium-severity vulnerability in Unknown Otter Blocks, published on 23 Oct 2026.
Official description
The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post.
Weakness: CWE-79
Which versions are affected by CVE-2026-109933?
How do I fix CVE-2026-109933?
No fix has been published for CVE-2026-109933 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109933 being exploited?
There is no known exploitation of CVE-2026-109933 in the wild and no public exploit code.
Sources
Also known as GHSA-655q-x6wx-x8mp.