# CVE-2026-77263: Cross-site scripting in iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more

> Unauthenticated attackers can inject malicious scripts via comments, leading to code execution and potential account takeover for any visitor, including administrators.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Sep 2026
- **Updated:** 8 Sep 2026
- **Also known as:** GHSA-3cj7-86g6-85rv

## What is CVE-2026-77263?

CVE-2026-77263 is a high-severity cross-site scripting vulnerability in iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more, published on 5 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 3.13.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit works by embedding KSES-allowed markup such as abbr title attributes and HTML comments in a submitted comment so that the global strtr() substitution strips substrings from an inert tag, mutating it into an executable element such as an img onerror handler that runs in the WordPress origin for any visitor, including logged-in administrators.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-77263?


## How do I fix CVE-2026-77263?

No fix has been published for CVE-2026-77263 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-77263 being exploited?

There is no known exploitation of CVE-2026-77263 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-77263 and fix it if it is affected.

What it is: CVE-2026-77263 is a high-severity cross-site scripting vulnerability in iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more, published on 5 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-77263 in the wild and no public exploit code.

Affected product: iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more. 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-2026-77263/ (Markdown: https://insights.sbomify.com/CVE-2026-77263/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-77263
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77263
- OSV: https://osv.dev/vulnerability/CVE-2026-77263

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-77263/
Summaries are generated and may contain mistakes; the official description above is the record.