Blind SSRF via unvalidated scheduler callback URL
Published Mar 26, 2026 · Updated Mar 26, 2026
SSRF in PinchTab 0.8.3 allows remote authenticated users to send blind HTTP requests through an enabled task scheduler. The sendWebhook function in internal/scheduler/webhook.go validates only the URL scheme, follows redirects, and does not reject or pin non-public destination IPs. The scheduler is disabled by default; token-protected deployments require the master API token, and the fixed POST does not return response bodies.
Summary
What happened
SSRF in PinchTab 0.8.3 allows remote authenticated users to send blind HTTP requests through an enabled task scheduler. The sendWebhook function in internal/scheduler/webhook.go validates only the URL scheme, follows redirects, and does not reject or pin non-public destination IPs. The scheduler is disabled by default; token-protected deployments require the master API token, and the fixed POST does not return response bodies.
The record
- CVE
- CVE-2026-33619
- Published
- Mar 26, 2026
- Updated
- Mar 26, 2026
- Vendor
- PinchTab
- Product
- PinchTab
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Mar 26, 2026CVE publishedPublication date reported by the CVE source.
- Mar 26, 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=< 0.8.4
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
- Vendor advisory webhook proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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