CVE-2026-116063 DedeCMS update_guide.php require_once code injection
Medium 5.1
Published
Updated
Check this codebase for CVE-2026-116063 and fix it if it is affected.
What it is: CVE-2026-116063 is a medium-severity vulnerability in DedeCMS, published on 25 Oct 2026.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-116063 exists.
Affected product: DedeCMS. 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-2026-116063/ (Markdown: https://insights.sbomify.com/CVE-2026-116063/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-116063?
CVE-2026-116063 is a medium-severity vulnerability in DedeCMS, published on 25 Oct 2026.
Official description
A weakness has been identified in DedeCMS up to 5.7.118. Impacted is the function require_once of the file dede/update_guide.php. This manipulation of the argument vtime causes code injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-116063?
How do I fix CVE-2026-116063?
No fix has been published for CVE-2026-116063 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-116063 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-116063 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-g9jw-2c37-v8j4.