CVE-2022-42964

MEDIUMNVD 5.95.9—

5.9

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the pymatgen PyPI package, when an attacker is able to supply arbitrary input to the GaussianInput.from_string method

CVSS v3: 5.9
EG Score: 5.9(medium)
EPSS: 45.1%
KEV: Not listed

Published

November 9, 2022

Last Modified

February 4, 2025

References (2)

reefs@jfroghttps://research.jfrog.com/vulnerabilities/pymatgen-redos-xray-257184/
af854a3a-2127-422b-91ae-364da2661108https://research.jfrog.com/vulnerabilities/pymatgen-redos-xray-257184/

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
pip	pymatgen	—	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

(1 across 1 ecosystem)

PyPI(1)

Package	Vulnerable range	Fixed in	Dependents
pymatgen	1.0.4 ... 4.7.7 (341 versions)	—	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-1333Inefficient Regular Expression Complexity (ReDoS)

Data Freshness Timeline

(refreshed 10× in last 7d / 10× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 12:25 UTCEG score recompute
2026-05-25 12:25 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2022-42964?

CVE-2022-42964 is a medium vulnerability published on November 9, 2022. An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the pymatgen PyPI package, when an attacker is able to supply arbitrary input to the GaussianInput.from_string method

When was CVE-2022-42964 disclosed?

CVE-2022-42964 was first published in the National Vulnerability Database on November 9, 2022, with the most recent update on February 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-42964 actively exploited?

CVE-2022-42964 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-42964?

CVE-2022-42964 has a CVSS v3 base score of 5.9 (NVD).

How do I remediate CVE-2022-42964?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-42964, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-42964

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