# CVE-2015-7776: Information disclosure in n/a

> Remote attackers can track users via crafted HTML emails due to improper restriction of IMG element loading in Cybozu Garoon.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Jun 2016
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-h8p2-jf45-r49w

## What is CVE-2015-7776?

CVE-2015-7776 is a medium-severity vulnerability in Cybozu Garoon, published on 19 Jun 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Cybozu Garoon 3.x and 4.x before 4.2.0 does not properly restrict loading of IMG elements, which makes it easier for remote attackers to track users via a crafted HTML e-mail message, a different vulnerability than CVE-2016-1196.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2015-7776?

It affects 1 product.


Products: Cybozu Garoon.

## How do I fix CVE-2015-7776?

No fix has been published for CVE-2015-7776 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-7776 being exploited?

There is no known exploitation of CVE-2015-7776 in the wild and no public exploit code.

## Other vulnerabilities in Cybozu Garoon

- [CVE-2014-1987](https://insights.sbomify.com/CVE-2014-1987/): Command injection in n/a (critical 10.0)
- [CVE-2019-5945](https://insights.sbomify.com/CVE-2019-5945/): Information disclosure in Cybozu Garoon (critical 9.8)
- [CVE-2016-1219](https://insights.sbomify.com/CVE-2016-1219/): Auth bypass in n/a (critical 9.8)
- [CVE-2024-31401](https://insights.sbomify.com/CVE-2024-31401/): Cross-site scripting in Cybozu Garoon (critical 9.0)
- [CVE-2018-0607](https://insights.sbomify.com/CVE-2018-0607/): SQL injection in Cybozu Garoon (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-7776 and fix it if it is affected.

What it is: CVE-2015-7776 is a medium-severity vulnerability in Cybozu Garoon, published on 19 Jun 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2015-7776 in the wild and no public exploit code.

Affected product: Cybozu Garoon. 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-2015-7776/ (Markdown: https://insights.sbomify.com/CVE-2015-7776/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-7776
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-7776
- OSV: https://osv.dev/vulnerability/CVE-2015-7776

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-7776/
Summaries are generated and may contain mistakes; the official description above is the record.