CVE-2026-116842 DevilutionX 1.4.0 through 1.5.5 Heap Buffer Overflow via libmpq__archive_dup
Medium 6.9
Published
Updated
Check this codebase for CVE-2026-116842 and fix it if it is affected.
What it is: CVE-2026-116842 is a medium-severity vulnerability in diasurgical DevilutionX, published on 27 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-116842 in the wild and no public exploit code.
Affected product: diasurgical DevilutionX. 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-2026-116842/ (Markdown: https://insights.sbomify.com/CVE-2026-116842/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-116842?
CVE-2026-116842 is a medium-severity vulnerability in diasurgical DevilutionX, published on 27 Oct 2026.
Official description
DevilutionX 1.4.0 through 1.5.5 contains a heap buffer overflow vulnerability in the bundled libmpq libmpq__archive_dup routine when opening crafted MPQ archives. Attackers can supply an MPQ archive whose block table count exceeds its hash table count, causing memcpy to overflow the heap during startup and crash the game.
Weakness: CWE-787
Which versions are affected by CVE-2026-116842?
How do I fix CVE-2026-116842?
No fix has been published for CVE-2026-116842 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-116842 being exploited?
There is no known exploitation of CVE-2026-116842 in the wild and no public exploit code.
Sources
Also known as GHSA-g75x-vcw6-3m3f.