criticalVulnerability
CVE-2026-77413
JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.0, the src/functions.js lookup function lacked an Object.prototype.hasOwnProperty check and allowed crafted expressions to access inherited prototype members. An attacker able to supply an expression could use inherited prototype setters and getters, constructor access, valueOf, and process.getBuiltinModule to reach the child_process module and execute arbitrary code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.0.
Properties
- severity
- critical
- summary
- JSONata: Arbitrary Code Execution via crafted JSONata expressions
- epss_score
- 0.00719
- retrieved_at
- 2026-10-05T10:42:26+00:00
- ghsa_published
- 2026-08-21T20:57:07Z
- source_url
- https://github.com/advisories/GHSA-8gq3-vp5j-2grp
- ghsa_updated
- 2026-08-21T20:57:09Z
- ghsa_id
- GHSA-8gq3-vp5j-2grp
- last_source
- FIRST EPSS
- cve_id
- CVE-2026-77413
- signal_observed_at
- 2026-09-11T17:54:59+00:00
- is_ghsa_only
- false
- published_at
- 2026-08-21T21:17:07.267
- last_modified
- 2026-09-09T21:06:39.057
- epss_percentile
- 0.52248
Related Entities (6)
DESCRIBED_BY (1)
→[Source]NVD
ENRICHED_BY (1)
→[Source]FIRST EPSS
VULNERABLE_TO (1)
←[Software]npm/jsonata
AFFECTS (1)
→[Software]npm/jsonata
HAS_WEAKNESS (1)
→[Weakness]Improper Control of Generation of Code ('Code Injection')
REPORTED_BY (1)
→[Source]GitHub Advisory Database
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