CVE-2025-71320

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-17. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when the pickle is deserialized.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
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
0.8%
EPSS %ILE
56th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 17, 2026

Last Modified

October 5, 2026

Advisory Details (2)

Auto-updated Oct 5, 2026
🔬 Proof of concept available. Patch available. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Incomplete List of Disallowed Inputs in picklescan · Advisory · mmaitre314/picklescan · GitHub

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-84r2-jw7c-4r5q
generic

picklescan - Remote Code Execution via Incomplete Disallowed Inputs | Advisories | VulnCheck

https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-incomplete-disallowed-inputs

Vendor Advisories for CVE-2025-71320(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
picklescan0.0.1 ... 0.0.9 (32 versions)
  • every version up to 0.0.33: fixed in 0.0.33
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 165 total refreshes for this CVE.

  1. 2026-10-09 20:06 UTCEPSS rescore
  2. 2026-10-08 17:11 UTCEPSS rescore
  3. 2026-10-07 23:47 UTCEPSS rescore
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  24. 2026-09-14 02:25 UTCEG score recompute
  25. 2026-09-13 16:46 UTCEPSS rescore
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  1. 2026-09-13 14:13 UTCEG score recompute
  2. 2026-09-12 15:00 UTCEPSS rescore
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  11. 2026-09-01 13:53 UTCEPSS rescore
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  18. 2026-08-24 22:24 UTCEG score recompute
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  20. 2026-08-23 04:19 UTCEG score recompute
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  23. 2026-08-21 23:48 UTCEPSS rescore
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  26. 2026-08-20 08:13 UTCEG score recompute
  27. 2026-08-19 17:03 UTCEPSS rescore
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  29. 2026-08-18 13:48 UTCEPSS rescore
  30. 2026-08-17 15:31 UTCEG score recompute
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  38. 2026-08-13 22:48 UTCEG score recompute
  39. 2026-08-13 22:00 UTCEPSS rescore
  40. 2026-08-12 13:50 UTCEG score recompute
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  42. 2026-08-11 15:41 UTCEG score recompute
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  45. 2026-08-10 23:59 UTCEPSS rescore
  46. 2026-08-09 14:24 UTCEG score recompute
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  48. 2026-08-08 19:59 UTCEG score recompute
  49. 2026-08-08 16:36 UTCEPSS rescore
  50. 2026-08-07 18:11 UTCEG score recompute
  51. 2026-08-07 16:27 UTCEPSS rescore
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  53. 2026-08-06 13:46 UTCEPSS rescore
  54. 2026-08-05 21:58 UTCEG score recompute
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  70. 2026-07-27 14:13 UTCEPSS rescore
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  72. 2026-07-26 14:54 UTCEPSS rescore
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  74. 2026-07-25 14:17 UTCEPSS rescore
  75. 2026-07-25 14:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-71320?
CVE-2025-71320 is a critical vulnerability published on June 17, 2026. picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when…
When was CVE-2025-71320 disclosed?
CVE-2025-71320 was first published on June 17, 2026, with the most recent update on October 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71320 actively exploited?
CVE-2025-71320 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-71320?
CVE-2025-71320 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-71320?
A fix for CVE-2025-71320 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-71320 are linked in the Vendor Advisories panel on this page.

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