OSV-2026-630 Use-of-uninitialized-value in JXRHandlerPrivate::readTextMeta
Not scored
Published
Check this codebase for OSV-2026-630 and fix it if it is affected.
What it is: OSV-2026-630 is a vulnerability in kimageformats, published on 27 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of OSV-2026-630 in the wild and no public exploit code.
Affected packages and fixed versions:
- kimageformats (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-2026-630/ (Markdown: https://insights.sbomify.com/OSV-2026-630/index.md)
An attacker can cause a denial of service by providing a crafted JXR image that triggers the use of an uninitialized value in the metadata reader.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2026-630?
OSV-2026-630 is a vulnerability in kimageformats, published on 27 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=506459935
Crash type: Use-of-uninitialized-value
Crash state:
JXRHandlerPrivate::readTextMeta
JXRHandlerPrivate::description
JXRHandlerPrivate::setMetadata
Which versions are affected by OSV-2026-630?
1 open source package ship an affected version, including kimageformats.
| Package | Affected | Fixed in |
|---|---|---|
kimageformats OSS-Fuzz | All versions | None |
How do I fix OSV-2026-630?
No fix has been published for OSV-2026-630 yet. Limit exposure of the affected software until one is available.
Is OSV-2026-630 being exploited?
There is no known exploitation of OSV-2026-630 in the wild and no public exploit code.