Pymatgen (Python Materials Genomics) is an open-source Python library for materials analysis. A critical security vulnerability exists in the JonesFaithfulTransformation.from_transformation_str() method within the pymatgen library prior to version 2024.2.20. This method insecurely utilizes eval() for processing input, enabling execution of arbitrary code when parsing untrusted input. Version 2024.2.20 fixes this issue.
CVE-2024-23346
“—” beside the score: it is equal to NVD's CVSS score.
Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2024-02-21. NVD baseline CVSS 9.3; sources differ by 0.0.
Also known asEUVD-2024-0203 (ENISA EUVD) · GHSA-vgv8-5cpj-qj2f (GitHub Security Advisories)Source: ENISA EUVD
- Public exploit or proof-of-concept code is available
A fix is available — apply it.
- CVSS v3
- 9.3
- EG Score
- 9.3CRITICALmedium confidence
- EG Risk
- 58EG Risk 58/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity93% × 45%Impact severity (EG Severity): CVSS 9.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 3.8%
- EPSS %ILE
- 90th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.3): severity, escalated by confirmed exploitation. This CVE's 9.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.3 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 3.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-02). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
February 21, 2024
Last Modified
February 5, 2025
Advisory Details (3)
Auto-updated Sep 15, 2026Critical Security Flaw in Pymatgen Library (CVE-2024-23346) - vsociety
https://www.vicarius.io/vsociety/posts/critical-security-flaw-in-pymatgen-library-cve-2024-23346Arbitrary code execution when parsing a maliciously crafted JonesFaithfulTransformation transformation_string · Advisory · materialsproject/pymatgen · GitHub
https://github.com/materialsproject/pymatgen/security/advisories/GHSA-vgv8-5cpj-qj2fcommit c231cbd3d514 (materialsproject/pymatgen)
Patch available: materialsproject/pymatgen v2024.6.10 (contains commit c231cbd3d514)
https://github.com/materialsproject/pymatgen/commit/c231cbd3d5147ee920a37b6ee9dd236b376bcf5aPatch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| pip | pymatgen @ 2024.2.20 (fixes < 2024.2.20) | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(4 across 4 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| pymatgen | 2022.11.7+dfsg1-11 |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| pymatgen | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| pymatgen | — |
| — |
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| pymatgen | 1.0.4 ... v1.0.2 (581 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 18× in last 7d / 59× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 98 of 221 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 123 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 21:07 UTCEG score recompute
- 2026-11-02 21:07 UTCGHSA enrichmentGHSA-vgv8-5cpj-qj2f · GitHub severity CRITICAL · GitHub CVSS 9.3
- 2026-11-02 16:40 UTCEPSS rescoreEPSS 3.8% · 90th percentile
- 2026-11-01 22:41 UTCEG score recompute
- 2026-11-01 22:41 UTCGHSA enrichmentGHSA-vgv8-5cpj-qj2f · GitHub severity CRITICAL · GitHub CVSS 9.3
- 2026-11-01 08:16 UTCGHSA enrichmentGHSA-vgv8-5cpj-qj2f · GitHub severity CRITICAL · GitHub CVSS 9.3
- 2026-11-01 08:16 UTCEG score recompute
- 2026-11-01 00:15 UTCEG score recompute
- 2026-10-31 16:30 UTCEPSS rescoreEPSS 3.8% · 90th percentile
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- 2026-10-24 10:35 UTCEG score recompute
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- 2026-10-23 12:10 UTCEG score recompute
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 3.8% · 90th percentile
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- 2026-10-21 16:29 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-10-20 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-10-17 16:30 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-10-15 16:29 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-10-14 13:23 UTCEG score recompute
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- 2026-10-12 14:55 UTCEG score recompute
- 2026-10-11 23:54 UTCOSV refresh
- 2026-10-11 21:26 UTCEG score recompute
- 2026-10-11 16:20 UTCEG score recompute
- 2026-10-11 13:45 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-09-30 16:57 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-09-28 13:49 UTCEPSS rescoreEPSS 3.8% · 89th percentile
- 2026-09-24 14:01 UTCEPSS rescoreEPSS 3.8% · 89th percentile
- 2026-09-23 13:46 UTCEPSS rescoreEPSS 3.8% · 89th percentile
- 2026-09-22 07:46 UTCOSV refresh
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-09-04 05:05 UTCEPSS rescoreEPSS 3.8% · 89th percentile
- 2026-09-03 04:59 UTCOSV refresh
- 2026-09-02 14:10 UTCEPSS rescoreEPSS 3.8% · 89th percentile
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- 2026-08-16 18:26 UTCOSV refresh
- 2026-08-16 14:54 UTCEPSS rescoreEPSS 3.8% · 89th percentile
Publicly available exploits
(4 references)Public exploit code is referenced for this CVE (1 Exploit-DB entry, 3 GitHub PoCs). Defenders should treat patch urgency accordingly.
- GitHub PoCDAVIDAROCA27/CVE-2024-23346-exploitPublished Jul 24, 2025
This is a exploit for the known Remote Code Execution (RCE) vulnerability in the `pymatgen` (CVE-2024-23346) Python library by uploading a malicious `CIF` file to the hosted `CIF Analyzer` website on the target running on the Chemistry machine from Hack the Box.
Open source ↗ - Exploit-DBEDB-52205Published Apr 15, 2025
Pymatgen 2024.1 - Remote Code Execution (RCE)
Open source ↗ - GitHub PoCSanity-Archive/CVE-2024-23346Published Feb 20, 2025
PoC of the vulnerability CVE-2024-23346
Open source ↗ - GitHub PoC9carlo6/CVE-2024-23346Published Nov 5, 2024
This repository contains a Crystallographic Information File (CIF) intended for use on the "Chemistry" machine on Hack The Box (HTB).
Open source ↗
Related CVEs(same product + same CWE)
Frequently asked(5)
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Dependency Blast Radius
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