# CVE-2023-49881: IBM Transformation Extender Advanced session fixation

> An attacker can impersonate another user by exploiting session fixation due to sessions not being invalidated after logout in IBM Transformation Extender Advanced.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **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:** 1 Oct 2025
- **Updated:** 1 Oct 2025
- **Also known as:** GHSA-65v7-8599-57vr

## What is CVE-2023-49881?

CVE-2023-49881 is a medium-severity authentication bypass vulnerability in IBM Transformation Extender Advanced, published on 1 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Transformation Extender Advanced 10.0.1 

does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system.

Weakness: CWE-613 (DEPRECATED: Insufficient Session Expiration)

## Which versions are affected by CVE-2023-49881?

It affects 1 product.


Products: Ibm Transformation Extender Advanced.

## How do I fix CVE-2023-49881?

No fix has been published for CVE-2023-49881 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49881 being exploited?

There is no known exploitation of CVE-2023-49881 in the wild and no public exploit code.

## Other vulnerabilities in IBM Transformation Extender Advanced

- [CVE-2023-49886](https://insights.sbomify.com/CVE-2023-49886/): IBM Transformation Extender Advanced code execution (critical 9.8)
- [CVE-2023-49883](https://insights.sbomify.com/CVE-2023-49883/): IBM Transformation Extender Advanced information disclosure (medium 5.9)
- [CVE-2023-50300](https://insights.sbomify.com/CVE-2023-50300/): IBM Transformation Extender Advanced improper access control (medium 5.1)
- [CVE-2021-29883](https://insights.sbomify.com/CVE-2021-29883/): Information disclosure in Transformation Extender Advanced (medium 4.3)
- [CVE-2023-50301](https://insights.sbomify.com/CVE-2023-50301/): IBM Transformation Extender Advanced information disclosure (low 1.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49881 and fix it if it is affected.

What it is: CVE-2023-49881 is a medium-severity authentication bypass vulnerability in IBM Transformation Extender Advanced, published on 1 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-49881 in the wild and no public exploit code.

Affected product: IBM Transformation Extender Advanced. 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-2023-49881/ (Markdown: https://insights.sbomify.com/CVE-2023-49881/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49881
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49881
- OSV: https://osv.dev/vulnerability/CVE-2023-49881

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49881/
Summaries are generated and may contain mistakes; the official description above is the record.