Is there a public exploit for CVE-2025-12735?

Yes. Proof-of-concept code for CVE-2025-12735 has been published publicly.

Is there a proof of concept for CVE-2025-12735?

Yes — 3 proof-of-concept entries are linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2025-12735?

CVE-2025-12735 scores CVSS 9.8 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 1.76%.

What does CVE-2025-12735 affect?

CVE-2025-12735 affects expr-eval-fork, silentmatt expr-eval-fork, expr-eval.

9.8 Critical

The expr-eval library is a JavaScript expression parser and evaluator designed to safely evaluate mathematical expressions with…

CVE-2025-12735

The expr-eval library is a JavaScript expression parser and evaluator designed to safely evaluate mathematical expressions with user-defined variables. However, due to insufficient input validation, an attacker can pass a crafted context object or use MEMBER of the context object into the evaluate() function and trigger arbitrary code execution.

Proof-of-concept code is published

Public PoC

Public PoCalecasg555/safe-expr-eval4 stars
Public PoCalnashawatirohwederb2167-max/cve-2025-12735-expr-eval-rce
Public PoCAN5I/cve-2025-12735-expr-eval-rce

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 9.8 (v3.1)
Severity: Critical
EPSS: 1.76% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 5 November 2025
Last updated: 18 October 2026
Affected: expr-eval-fork · silentmatt · expr-eval · expr-eval-fork
Weakness: CWE-94
Assigner: cret@cert.org

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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