CVE-2026-35459Public exploitNetwork attack vector

Authenticated SSRF via unvalidated redirect targets

Published Apr 6, 2026 · Updated Apr 6, 2026

SSRF in BaseDownloader in pyLoad 0.5.0b3.dev96 and earlier allows remote authenticated users to access internal services via redirects. BaseDownloader validates only the initial URL, while HTTPRequest lets pycurl follow up to ten redirects without validating each destination. ADD permission is required; a crafted link can retrieve cloud metadata, localhost resources, or private-network content into the download store.

CVSS severity9.3
Critical
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in BaseDownloader in pyLoad 0.5.0b3.dev96 and earlier allows remote authenticated users to access internal services via redirects. BaseDownloader validates only the initial URL, while HTTPRequest lets pycurl follow up to ten redirects without validating each destination. ADD permission is required; a crafted link can retrieve cloud metadata, localhost resources, or private-network content into the download store.

The record

CVE
CVE-2026-35459
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
pyLoad
Product
pyLoad
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=<= 0.5.0b3.dev96

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pyLoad · pyLoadversion=<= 0.5.0b3.dev96

Published CVSS scores

9.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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