# CVE-2020-4896: Other in Emptoris Sourcing

> Attackers can poison web caches by modifying HTTP request headers, potentially serving malicious content to other users.

- **Severity:** Medium 6.5 (`CVSS:3.0/I:L/UI:N/C:L/S:U/A:N/AC:L/PR:N/AV:N/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jan 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-vwcx-ffx9-jw3x

## What is CVE-2020-4896?

CVE-2020-4896 is a medium-severity vulnerability in IBM Emptoris Sourcing, published on 7 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM Emptoris Sourcing 10.1.0, 10.1.1, and 10.1.3 is vulnerable to web cache poisoning, caused by improper input validation by modifying HTTP request headers. IBM X-Force ID: 190987.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-4896?

It affects 1 product.


Products: Ibm Emptoris Sourcing.

## How do I fix CVE-2020-4896?

No fix has been published for CVE-2020-4896 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-4896 being exploited?

There is no known exploitation of CVE-2020-4896 in the wild and no public exploit code.

## Other vulnerabilities in IBM Emptoris Sourcing

- [CVE-2017-1450](https://insights.sbomify.com/CVE-2017-1450/): Open redirect in Emptoris Sourcing (medium 6.1)
- [CVE-2016-8947](https://insights.sbomify.com/CVE-2016-8947/): Open redirect in Emptoris Sourcing (medium 6.1)
- [CVE-2016-0329](https://insights.sbomify.com/CVE-2016-0329/): Open redirect in n/a (medium 5.4)
- [CVE-2017-1444](https://insights.sbomify.com/CVE-2017-1444/): Cross-site scripting in Emptoris Sourcing (medium 5.4)
- [CVE-2017-1447](https://insights.sbomify.com/CVE-2017-1447/): Cross-site scripting in Emptoris Sourcing (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-4896 and fix it if it is affected.

What it is: CVE-2020-4896 is a medium-severity vulnerability in IBM Emptoris Sourcing, published on 7 Jan 2021. 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-2020-4896 in the wild and no public exploit code.

Affected product: IBM Emptoris Sourcing. 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-2020-4896/ (Markdown: https://insights.sbomify.com/CVE-2020-4896/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-4896
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-4896
- OSV: https://osv.dev/vulnerability/CVE-2020-4896

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-4896/
Summaries are generated and may contain mistakes; the official description above is the record.