CVE-2025-13204
highpriority · track · 0EPSS 0.005 · 42 %ileDEEUUSEPSS · scored 2026-10-28
npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- Fixedgrafana-pcp-0:1.0.5-5.el8_2.noarch as a component of Red Hat Enterprise Linux AppStream AUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2026:0140 - Fixedgrafana-pcp-0:1.0.5-5.el8_2.src as a component of Red Hat Enterprise Linux AppStream AUS (v. 8.2)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2026:0140 - Workaroundgrafana-pcp-0:1.0.5-5.el8_2.noarch as a component of Red Hat Enterprise Linux AppStream AUS (v. 8.2)redhat_csaf
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
- Workaroundgrafana-pcp-0:1.0.5-5.el8_2.src as a component of Red Hat Enterprise Linux AppStream AUS (v. 8.2)redhat_csaf
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.7–7.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (8)
Products and version ranges known to be affected.
- silentmatt javascript expression evaluatorall versionsnvdUScpe:2.3:a:silentmatt:javascript_expression_evaluator:*:*:*:*:*:*:*:*
advisories (3)
Vendor and ecosystem advisories describing this.
- RHSA-2026:0140Red Hat Security Advisory: grafana-pcp security update2026-01-06csaf · redhat_csafUS
An update for grafana-pcp is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- WID-SEC-W-2026-0021Red Hat Enterprise Linux (npm expr-eval): Schwachstelle ermöglicht CodeausführungDeutsch2026-01-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um beliebigen Programmcode auszuführen.
- GHSA-8gw3-rxh4-v6jxexpr-eval vulnerable to Prototype Pollution2025-11-14ghsa · osvUS
npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (21)
External citations — patches, advisories, analysis.
- https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.pycnnvd
- https://github.com/jorenbroekema/expr-evalcnnvd
- https://github.com/silentmatt/expr-evalcnnvd
- https://github.com/silentmatt/expr-eval/pull/252/filescnnvd
- https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.pycnnvd
- https://www.huntr.dev/bounties/1-npm-expr-eval/cnnvd
- https://www.npmjs.com/package/expr-eval-forkcnnvd
- https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.pyenisa_euvd
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