# CVE-2020-36913: All-Dynamics Software enlogic:show 2.0.2 Session Fixation Authentication Bypass

> Attackers can bypass authentication in enlogic:show by fixing PHP session IDs, allowing unauthorized access and potential CSRF attacks.

- **Severity:** High 8.5 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA: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:** 6 Jan 2026
- **Updated:** 6 Jan 2026
- **Also known as:** GHSA-xchh-23fv-6m64

## What is CVE-2020-36913?

CVE-2020-36913 is a high-severity authentication bypass vulnerability in All-Dynamics Software enlogic:show Digital Signage System, published on 6 Jan 2026. 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

All-Dynamics Software enlogic:show 2.0.2 contains a session fixation vulnerability that allows attackers to set a predefined PHP session identifier during the login process. Attackers can forge HTTP GET requests to welcome.php with a manipulated session token to bypass authentication and potentially execute cross-site request forgery attacks.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2020-36913?


## How do I fix CVE-2020-36913?

No fix has been published for CVE-2020-36913 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36913 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36913 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36913 and fix it if it is affected.

What it is: CVE-2020-36913 is a high-severity authentication bypass vulnerability in All-Dynamics Software enlogic:show Digital Signage System, published on 6 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36913 exists.

Affected product: All-Dynamics Software enlogic:show Digital Signage System. 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-2020-36913/ (Markdown: https://insights.sbomify.com/CVE-2020-36913/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36913
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36913
- OSV: https://osv.dev/vulnerability/CVE-2020-36913

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36913/
Summaries are generated and may contain mistakes; the official description above is the record.