# CVE-2020-4527: Information disclosure in Planning Analytics

> Attackers can intercept session cookies transmitted over HTTP to steal sensitive information and potentially hijack user accounts.

- **Severity:** Medium 5.9 (`CVSS:3.0/UI:N/AV:N/AC:H/C:H/S:U/I:N/PR:N/A:N/RC:C/E:U/RL:O`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jul 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-jh29-7cwf-26xx

## What is CVE-2020-4527?

CVE-2020-4527 is a medium-severity vulnerability in IBM Planning Analytics, published on 20 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM Planning Analytics 2.0 could allow a remote attacker to obtain sensitive information, caused by the failure to set the Secure flag for the session cookie in TLS mode. By intercepting its transmission within an HTTP session, an attacker could exploit this vulnerability to capture the cookie and obtain sensitive information. IBM X-Force ID: 182631.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2020-4527?

It affects 1 product.


Products: Ibm Planning Analytics.

## How do I fix CVE-2020-4527?

No fix has been published for CVE-2020-4527 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-4527 being exploited?

There is no known exploitation of CVE-2020-4527 in the wild and no public exploit code.

## Other vulnerabilities in IBM Planning Analytics

- [CVE-2019-4716](https://insights.sbomify.com/CVE-2019-4716/): IBM Planning Analytics Remote Code Execution (critical 10.0, exploited in the wild)
- [CVE-2026-19620](https://insights.sbomify.com/CVE-2026-19620/): IBM Planning Analytics Local is affected by security vulnerabilities (high 8.8)
- [CVE-2026-19622](https://insights.sbomify.com/CVE-2026-19622/): IBM Planning Analytics Local is affected by security vulnerabilities (high 8.8)
- [CVE-2026-19627](https://insights.sbomify.com/CVE-2026-19627/): IBM Planning Analytics Local is affected by security vulnerabilities (high 8.2)
- [CVE-2024-25034](https://insights.sbomify.com/CVE-2024-25034/): IBM Planning Analytics file upload (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-4527 and fix it if it is affected.

What it is: CVE-2020-4527 is a medium-severity vulnerability in IBM Planning Analytics, published on 20 Jul 2020. 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-2020-4527 in the wild and no public exploit code.

Affected product: IBM Planning Analytics. 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-2020-4527/ (Markdown: https://insights.sbomify.com/CVE-2020-4527/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-4527
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-4527
- OSV: https://osv.dev/vulnerability/CVE-2020-4527

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-4527/
Summaries are generated and may contain mistakes; the official description above is the record.