Authenticated SSRF via unchecked HTTP redirects
Published May 28, 2026 · Updated May 28, 2026
SSRF in pyLoad before 0.5.0b3.dev100 allows remote authenticated users to reach private HTTP services through crafted redirects. The parse_urls API validates only the initial hostname, then HTTPRequest follows redirects while allow_private_ip remains enabled, so redirected private addresses escape the PREREQFUNCTION check. ADD permission is required, and response disclosure is limited to URL-like strings matched by RE_URLMATCH.
Summary
What happened
SSRF in pyLoad before 0.5.0b3.dev100 allows remote authenticated users to reach private HTTP services through crafted redirects. The parse_urls API validates only the initial hostname, then HTTPRequest follows redirects while allow_private_ip remains enabled, so redirected private addresses escape the PREREQFUNCTION check. ADD permission is required, and response disclosure is limited to URL-like strings matched by RE_URLMATCH.
The record
- CVE
- CVE-2026-46561
- Published
- May 28, 2026
- Updated
- May 28, 2026
- Vendor
- pyLoad
- Product
- pyLoad
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 28, 2026CVE publishedPublication date reported by the CVE source.
- May 28, 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.
- Affected versionversion=< 0.5.0b3.dev100
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- GHSA-8rp3-xc6w-5qp5 parse_urls redirect proof of conceptproof of concept · unverified
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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