CVE-2026-8759
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 · uneditedA vulnerability was identified in xiandafu beetl up to 3.20.2. Affected is an unknown function of the file beetl-classic-integration/beetl-spring-classic/src/main/java/org/beetl/ext/spring/SpELFunction.java of the component SpELFunction. The manipulation leads to improper neutralization of special elements used in an expression language statement. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
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 confidenceA remote Expression Language (EL) injection vulnerability in the SpELFunction component of xiandafu beetl up to v3.20.2 allows attackers to inject malicious expression language statements due to improper neutralization of special elements. The vulnerability is exploitable remotely and a public exploit exists.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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.
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Identify beetl library presenceInspect project dependencies (Maven pom.xml, Gradle build.gradle, or JAR files in classpath) for xiandafu beetl or beel modulesAffected if beetl library is found in the project dependencies
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Determine beetl versionCheck the declared version in your dependency management (pom.xml, build.gradle, or the beetl JAR manifest)Affected if version is 3.20.2 or lower, or no version is specified implying an older release
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Locate SpELFunction usageSearch codebase for imports or references to SpELFunction, SpELTemplate, or Spring Expression Language evaluation classes from beetlAffected if SpELFunction or related SpEL evaluation components are imported and used in code
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Trace user input to SpEL evaluationReview code paths where user-supplied data (request parameters, headers, body content) is passed to SpELFunction or similar SpEL evaluation methodsAffected if user input flows directly into SpEL evaluation without sanitization
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Inspect configuration filesCheck application configuration files (application.properties, application.yml, or custom beetl configuration) for SpEL-related settings or templates that may evaluate expressionsAffected if SpEL-related configuration exists and accepts external input
A user is affected if beetl version 3.20.2 or lower is in use AND SpELFunction is actively evaluating expressions that could receive unsanitized user input.
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 dataUpgrade beetl to a version beyond 3.20.2 that addresses the EL injection in SpELFunction, or implement input validation/sanitization on all user-supplied data before passing it to the SpEL evaluation.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-8759 — 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-2026-8759 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
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- Version or environment caveats, and links to real fixes
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