CVE-2023-45805Public exploit

Code execution via unchecked lockfile package identity

Published Oct 20, 2023 · Updated Sep 12, 2024

Improper input validation in PDM 2.0.0 through 2.9.3 allows attackers to install substituted packages through a malicious lockfile. PDM and unearth accept a distribution filename whose project name merely prefixes the expected name without verifying its parsed version and identity. A user or CI job must install from the crafted pdm.lock; the substituted package can execute arbitrary code during installation or force a dependency downgrade.

CVSS severity7.8
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in PDM 2.0.0 through 2.9.3 allows attackers to install substituted packages through a malicious lockfile. PDM and unearth accept a distribution filename whose project name merely prefixes the expected name without verifying its parsed version and identity. A user or CI job must install from the crafted pdm.lock; the substituted package can execute arbitrary code during installation or force a dependency downgrade.

The record

CVE
CVE-2023-45805
Published
Oct 20, 2023
Updated
Sep 12, 2024
Vendor
Frost Ming
Product
PDM
Classifications
CWE-20, T1195.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0.0 <2.10.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Frost Ming · PDMversion=2.0.0 <2.10.0
Frost Ming · unearthversion=0 <0.11.2
PDM Project · PDMversion=>= 2.0.0,< 2.9.4

Published CVSS scores

7.8GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1195.002Compromise Software Supply Chain

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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