CVE-2026-42315

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, when passing a folder name in the set_package_data() API function call inside the data object with key "_folder", there is no sanitization at all, allowing a user with Perms.MODIFY to specify arbitrary directories as download locations for a package. This vulnerability is fixed in 0.5.0b3.dev100.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

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
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
32.1%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 15, 2026

Advisory Details (1)

Auto-updated May 11, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Path Traversal via Package Folder Name in set_package_data · Advisory · pyload/pyload · GitHub

https://github.com/pyload/pyload/security/advisories/GHSA-838g-gr43-qqg9

Vendor Advisories for CVE-2026-42315(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 rangeFixed inDependents
pyload-ng0.5.0a5.dev528 ... 0.5.0b3.dev99 (104 versions)0.5.0b3.dev100—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 33× 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.

  1. 2026-07-23 03:11 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
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  1. 2026-06-29 14:06 UTCEPSS rescore
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  3. 2026-06-28 04:56 UTCEPSS rescore
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  5. 2026-06-25 13:49 UTCEPSS rescore
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  11. 2026-06-21 14:56 UTCEPSS rescore
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  20. 2026-06-13 23:00 UTCEPSS rescore
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  23. 2026-06-11 14:00 UTCEPSS rescore
  24. 2026-06-10 22:18 UTCEPSS rescore
  25. 2026-06-10 13:22 UTCEPSS rescore
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  27. 2026-06-08 14:17 UTCEPSS rescore
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  29. 2026-06-07 15:25 UTCEPSS rescore
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  31. 2026-06-06 13:47 UTCEPSS rescore
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  41. 2026-05-31 22:30 UTCEPSS rescore
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  43. 2026-05-31 00:16 UTCEPSS rescore
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  45. 2026-05-29 13:44 UTCEPSS rescore
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  47. 2026-05-28 13:44 UTCEPSS rescore
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  50. 2026-05-27 13:40 UTCEPSS rescore
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  53. 2026-05-26 13:44 UTCEPSS rescore
  54. 2026-05-26 07:18 UTCEPSS rescore
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  56. 2026-05-20 22:38 UTCEPSS rescore
  57. 2026-05-20 22:38 UTCEPSS rescore
  58. 2026-05-20 13:14 UTCEG score recompute
  59. 2026-05-20 11:22 UTCEPSS rescore
  60. 2026-05-20 11:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42315?
CVE-2026-42315 is a high vulnerability published on May 11, 2026. pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, when passing a folder name in the setpackagedata() API function call inside the data object with key "_folder", there is no sanitization at all, allowing a user with Perms.MODIFY to specify arbitrary…
When was CVE-2026-42315 disclosed?
CVE-2026-42315 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42315 actively exploited?
CVE-2026-42315 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42315?
CVE-2026-42315 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-42315?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42315, 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

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