CVE-2026-88361 Integer overflow in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2026-88361 and fix it if it is affected.
What it is: CVE-2026-88361 is a high-severity vulnerability in n/a, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88361 exists.
Affected product: n/a. 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-2026-88361/ (Markdown: https://insights.sbomify.com/CVE-2026-88361/index.md)
An integer overflow in SumatraPDF's PDF parsing allows attackers to cause a denial of service via malicious PageLabels.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88361?
CVE-2026-88361 is a high-severity vulnerability in n/a, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SumatraPDF 3.6.1 contains an integer overflow vulnerability in EngineMupdf::BuildPageLabelRec() when parsing PDF PageLabels /Nums entries.
Weakness: CWE-190
Which versions are affected by CVE-2026-88361?
How do I fix CVE-2026-88361?
No fix has been published for CVE-2026-88361 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-88361 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88361 exists.
Sources
Also known as GHSA-42pv-g2vh-7hf6.