# CVE-2018-1773: Auth bypass in Datacap

> Authenticated users can bypass subsequent authentication checks in IBM Datacap Fastdoc Capture, allowing unauthorized access to protected features.

- **Severity:** Medium 4.3 (`CVSS:3.0/A:N/AC:L/AV:N/C:N/I:L/PR:L/S:U/UI:N/E:U/RC:C/RL:O`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-g4hp-fw6r-gm2q

## What is CVE-2018-1773?

CVE-2018-1773 is a medium-severity authentication bypass vulnerability in IBM Datacap, published on 12 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Datacap Fastdoc Capture 9.1.1, 9.1.3, and 9.1.4 could allow an authenticated user to bypass future authentication mechanisms once the initial login is completed.  IBM X-Force ID: 148691.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2018-1773?

It affects 1 product.


Products: Ibm Datacap.

## How do I fix CVE-2018-1773?

No fix has been published for CVE-2018-1773 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-1773 being exploited?

There is no known exploitation of CVE-2018-1773 in the wild and no public exploit code.

## Other vulnerabilities in IBM Datacap

- [CVE-2024-39736](https://insights.sbomify.com/CVE-2024-39736/): IBM Datacap Navigator HTTP HOST header injection (medium 6.5)
- [CVE-2024-39728](https://insights.sbomify.com/CVE-2024-39728/): IBM Datacap Navigator cross-site scripting (medium 6.4)
- [CVE-2026-8059](https://insights.sbomify.com/CVE-2026-8059/): Multiple Vulnerabilities in IBM Datacap (medium 6.1)
- [CVE-2024-39731](https://insights.sbomify.com/CVE-2024-39731/): IBM Datacap Navigator information disclosure (medium 5.9)
- [CVE-2026-8636](https://insights.sbomify.com/CVE-2026-8636/): Multiple Vulnerabilities in IBM Datacap (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1773 and fix it if it is affected.

What it is: CVE-2018-1773 is a medium-severity authentication bypass vulnerability in IBM Datacap, published on 12 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-1773 in the wild and no public exploit code.

Affected product: IBM Datacap. 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-2018-1773/ (Markdown: https://insights.sbomify.com/CVE-2018-1773/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1773
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1773
- OSV: https://osv.dev/vulnerability/CVE-2018-1773

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1773/
Summaries are generated and may contain mistakes; the official description above is the record.