Session-header disclosure via unvalidated challenge paths
Published Jun 11, 2026 · Updated Jun 11, 2026
SSRF in signup challenge handling in subzeroid aiograpi before 0.9.10 allows attackers to disclose session headers via crafted paths. The signup.py challenge_api, challenge_captcha, and phone/SMS form handlers concatenate server-supplied api_path or navigation.forward values into request URLs without first rejecting absolute or scheme-relative destinations. Exploitation requires influence over an Instagram challenge response through a local-network, DNS, or proxy compromise and sends the client's existing session headers to an attacker-controlled host.
Summary
What happened
SSRF in signup challenge handling in subzeroid aiograpi before 0.9.10 allows attackers to disclose session headers via crafted paths. The signup.py challenge_api, challenge_captcha, and phone/SMS form handlers concatenate server-supplied api_path or navigation.forward values into request URLs without first rejecting absolute or scheme-relative destinations. Exploitation requires influence over an Instagram challenge response through a local-network, DNS, or proxy compromise and sends the client's existing session headers to an attacker-controlled host.
The record
- CVE
- CVE-2026-47157
- Published
- Jun 11, 2026
- Updated
- Jun 11, 2026
- Vendor
- subzeroid
- Product
- aiograpi
- Classifications
- CWE-918, CAPEC-664, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 11, 2026CVE publishedPublication date reported by the CVE source.
- Jun 11, 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=< 0.9.10
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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