# CVE-2018-7303: Cross-site scripting in n/a

> An attacker can inject malicious HTML into the Calendar component of Tiki, potentially leading to script execution or session hijacking.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Feb 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-9ch5-7x8v-5v63

## What is CVE-2018-7303?

CVE-2018-7303 is a medium-severity cross-site scripting vulnerability in Tiki Tikiwiki Cms\/Groupware, published on 21 Feb 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Calendar component in Tiki 17.1 allows HTML injection.

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

## Which versions are affected by CVE-2018-7303?

It affects 1 product.


Products: Tiki Tikiwiki Cms\/Groupware.

## How do I fix CVE-2018-7303?

No fix has been published for CVE-2018-7303 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7303 being exploited?

There is no known exploitation of CVE-2018-7303 in the wild and no public exploit code.

## Other vulnerabilities in Tiki Tikiwiki Cms\/Groupware

- [CVE-2008-3653](https://insights.sbomify.com/CVE-2008-3653/): Multiple unspecified vulnerabilities in TikiWiki CMS/Groupware before 2.0 have unknown impact and attack vectors. (critical 10.0)
- [CVE-2007-6529](https://insights.sbomify.com/CVE-2007-6529/): Other in n/a (critical 10.0)
- [CVE-2010-4239](https://insights.sbomify.com/CVE-2010-4239/): Path traversal in CMS Groupware (critical 9.8)
- [CVE-2012-0911](https://insights.sbomify.com/CVE-2012-0911/): Deserialization in n/a (critical 9.8)
- [CVE-2025-34111](https://insights.sbomify.com/CVE-2025-34111/): Tiki Wiki <= 15.1 ELFinder Unauthenticated File Upload RCE (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7303 and fix it if it is affected.

What it is: CVE-2018-7303 is a medium-severity cross-site scripting vulnerability in Tiki Tikiwiki Cms\/Groupware, published on 21 Feb 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-7303 in the wild and no public exploit code.

Affected product: Tiki Tikiwiki Cms\/Groupware. 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-2018-7303/ (Markdown: https://insights.sbomify.com/CVE-2018-7303/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7303
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7303
- OSV: https://osv.dev/vulnerability/CVE-2018-7303

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7303/
Summaries are generated and may contain mistakes; the official description above is the record.