CVE-2026-26100
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIncorrect Permission Assignment for Critical Resource in Owl opds 2.2.0.4 allows File Manipulation via a crafted network request.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceOwl opds 2.2.0.4 contains an incorrect permission assignment for critical resources that allows attackers to manipulate files via crafted network requests. The vulnerability stems from improper access control configurations that grant excessive permissions to sensitive file system resources.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.2.0.4CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Verify Owl Opds Talon installationLocate and confirm the presence of Owl Opds Talon software on the system. Check installation directories or use system inventory tools to identify if the product is deployed.Affected if Owl Opds Talon is installed on the system
-
Confirm installed version numberCheck the installed version of Owl Opds Talon by examining version files, binary metadata, or using product-specific version commands.Affected if The installed version is exactly 2.2.0.4
-
Inspect file permission configurationsReview file system permission settings for critical resources within the Owl Opds installation. Examine configuration files that control access to sensitive file system objects.Affected if Excessive or overly permissive access controls are assigned to critical file system resources
-
Check access control settings for file operationsInspect access control configurations that govern file manipulation operations. Look for configurations that grant write or execute permissions to sensitive resources beyond intended authorized contexts.Affected if Access control configurations allow unauthorized file manipulation via network requests
-
Review network request handling configurationsExamine settings related to how the application handles network requests that trigger file operations. Check if critical file system operations can be invoked through crafted network requests.Affected if Network request handling permits manipulation of files without proper authorization checks
A system is affected if Owl Opds Talon version 2.2.0.4 is installed and has file permission or access control configurations that allow excessive or unauthorized file manipulation via network requests.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataReview and correct file permission assignments in Owl opds, restricting access to critical resources and ensuring file operations are limited to authorized contexts only.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-26100 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-26100 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data