OSV-2026-374 Security exception in org.apache.poi.ss.formula.FormulaParser.additiveExpression
Not scored
Published
Check this codebase for OSV-2026-374 and fix it if it is affected.
What it is: OSV-2026-374 is a denial of service vulnerability in apache-poi, published on 10 Mar 2026.
Exploitation: There is no known exploitation of OSV-2026-374 in the wild and no public exploit code.
Affected packages and fixed versions:
- apache-poi (OSS-Fuzz): affected all versions; no fix listed
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/OSV-2026-374/ (Markdown: https://insights.sbomify.com/OSV-2026-374/index.md)
A security exception in Apache POI's formula parser can cause a denial of service when processing malicious spreadsheet files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2026-374?
OSV-2026-374 is a denial of service vulnerability in apache-poi, published on 10 Mar 2026.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=490896964
Crash type: Security exception
Crash state:
org.apache.poi.ss.formula.FormulaParser.additiveExpression
org.apache.poi.ss.formula.FormulaParser.concatExpression
org.apache.poi.ss.formula.FormulaParser.comparisonExpression
Which versions are affected by OSV-2026-374?
1 open source package ship an affected version, including apache-poi.
| Package | Affected | Fixed in |
|---|---|---|
apache-poi OSS-Fuzz | All versions | None |
How do I fix OSV-2026-374?
No fix has been published for OSV-2026-374 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is OSV-2026-374 being exploited?
There is no known exploitation of OSV-2026-374 in the wild and no public exploit code.