# CVE-2026-44265: Elo: Code injection in Elo backends via unvalidated emission of programmatic AST fields

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

Elo is a purely functional expression language for no-code tools. Prior to 1.0.1, Elo's programmatic AST API accepts arbitrary values from JSON-deserialized input, plugin output, or other untyped sources and interpolates them into generated JavaScript, Ruby, Python, or SQL without runtime syntax validation. The affected fields are int_literal / float_literal .value, variable.name, member_access.property, object_literal keys, datapath segments, lambda.params[].name, and the SQL let binding name. Crafted values become executable expressions or identifiers, allowing arbitrary code execution in JavaScript, Ruby, and Python targets and SQL injection in the SQL target. This programmatic AST-object path is distinct from the plain-string constructor-chain sandbox escape. This issue is fixed in version 1.0.1.

## Remediation

- fix: @enspirit/elo (npm): OSV reports a fixed version 1.0.1. Check the advisory for supported release branches. (source: OSV GHSA-x9rp-7wh3-2rj5) — https://github.com/advisories/GHSA-x9rp-7wh3-2rj5

## Affected products and versions

- enspirit / elo: < 1.0.1 (affected). Source: CNA: GitHub_M
-  / @enspirit/elo (@enspirit/elo): ≥ 0; < 1.0.1 (affected, semver); OSV events: introduced 0; fixed 1.0.1. Source: OSV GHSA-x9rp-7wh3-2rj5

## Severity and prioritization

- CVSS 3.1: 7.4 (high); CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-20, CWE-89, CWE-94, CWE-749

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/enspirit/elo/security/advisories/GHSA-x9rp-7wh3-2rj5 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/enspirit/elo/commit/d2a89a8db76a244eb740687524a7e8529b7554b5 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/enspirit/elo/commit/fb57dd37a2669d9c412454225c5b89a2adba5d93 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/advisories/GHSA-x9rp-7wh3-2rj5 (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-x9rp-7wh3-2rj5 (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-44265; retrieved 2026-11-03; source updated 2026-11-03

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-x9rp-7wh3-2rj5; retrieved 2026-11-03; source updated 2026-11-03

Revision: a110be2d2e8479cd3519e96ed95acb065acfa466f2ca3c9e2b34d79f95b54f14

Canonical: https://y2.dev/cve/CVE-2026-44265

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