CVE-2021-4118

mediumpriority · track · 31EPSS 0.010 · 63 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.01% (63rd) EPSS

CVSS 6.8 · medium

Is it mine?

4 products

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

pytorch-lightning is vulnerable to Deserialization of Untrusted Data

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.07.8highCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · security@huntr.devexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · OSV

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

The CWE weakness classes this flaw belongs to.

Products and version ranges known to be affected.

Vendor and ecosystem advisories describing this.

GHSA-2vj5-px25-gjrppytorch-lightning is vulnerable to Deserialization of Untrusted Data2022-01-06ghsa · osvUS
pytorch-lightning is vulnerable to Deserialization of Untrusted Data.
PYSEC-2021-8742021-12-23vendor · osvUS
pytorch-lightning is vulnerable to Deserialization of Untrusted Data
PYSEC-2026-39682026-09-10vendor · osvUS
pytorch-lightning is vulnerable to Deserialization of Untrusted Data

Other names and identifiers for this entity.

Which sources assert this record, and when.

published 2021-12-23modified 2026-06-17

External citations — patches, advisories, analysis.

scry

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