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CVE-2026-28677— OpenSift: Insufficient URL destination restrictions in ingest flow could enable SSRF-style internal access

Quick assessment

Affected

OpenSift OpenSift

Exploitation

Public or AI PoC available; prioritize validation

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenSift是OpenSift开源的一款人工智能学习助手。 OpenSift 1.6.3-alpha之前版本存在代码问题漏洞，该漏洞源于URL摄取管道接受用户控制的远程URL时目标限制不完整，可能导致服务端请求伪造攻击。

CVSS 8.2 · High EPSS 0.31% · P24 Updated Mar 07, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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I. Basic Information for CVE-2026-28677

Vulnerability Information

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Vulnerability Title

OpenSift: Insufficient URL destination restrictions in ingest flow could enable SSRF-style internal access

Source: CVE Program / CVE List V5

Vulnerability Description

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Prior to version 1.6.3-alpha, the URL ingest pipeline accepted user-controlled remote URLs with incomplete destination restrictions. Although private/local host checks existed, missing restrictions for credentialed URLs, non-standard ports, and cross-host redirects left SSRF-class abuse paths in non-localhost deployments. This issue has been patched in version 1.6.3-alpha.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

服务端请求伪造(SSRF)

Source: CVE Program / CVE List V5

Vulnerability Title

OpenSift 代码问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
OpenSift	OpenSift	< 1.6.3-alpha	-

II. Public POCs for CVE-2026-28677

#	POC Description	Source Link	Shenlong Link

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Qwen3.6-35B-A3B · 11579 chars

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III. Intelligence Information for CVE-2026-28677

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Patches & Fixes for CVE-2026-28677 (3)

Vendor Advisories for CVE-2026-28677 (1)

Insufficient URL destination restrictions in ingest flow could enable SSRF-style internal access · Advisory · OpenSift/OpenSift · GitHub x_refsource_CONFIRM

Vendor Pages for CVE-2026-28677 (1)

Release v1.6.3-alpha · OpenSift/OpenSift · GitHub x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-28677

Same Patch Batch · OpenSift · 2026-03-06 · 3 CVEs total

CVE-2026-28676	8.8 HIGH	OpenSift: Insufficient path containment checks in storage helpers could allow path travers
CVE-2026-28675	5.3 MEDIUM	OpenSift: Sensitive implementation details exposed via raw exception messages and token-re

IV. Related Vulnerabilities

Same product: OpenSift

Same vendor: OpenSift

Same weakness: CWE-918