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CVE-2026-85732— oras-go: Blind SSRF via unvalidated Link header URL in pagination allows internal network probing

Quick assessment

Affected
oras-project oras-go
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

oras-go 是一个用于管理 OCI（开放容器项目）制品的 Go 语言库。在 2.6.2 版本之前， 文件中的 函数在处理注册表（Registry）返回的 响应头时，会直接接受其中的绝对 URL，而未对其协议（scheme）、主机（host）或端口（port）进行任何验证。随后，在标签（Tags）、引用者（Referrers）和仓库（Repositories）的分页查询操作中，客户端会向攻击者指定的 URL 发起 GET 请求，从而允许从受害者网络内部对内部服务发起盲打型服务端请求伪造（Blind SSRF）攻击

CVSS 4.7 · Medium
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I. Basic Information for CVE-2026-85732

Vulnerability Information
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Vulnerability Title
oras-go: Blind SSRF via unvalidated Link header URL in pagination allows internal network probing
Source: CVE Program / CVE List V5
Vulnerability Description
oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, the parseLink function in registry/remote/utils.go accepts an absolute URL from a registry-controlled Link response header without validating its scheme, host, or port. Tags, Referrers, and Repositories pagination operations then issue a GET request to the attacker-selected URL from the victim's network, allowing blind server-side request forgery against internal services. The response body is not returned to the attacker, but timing and error differences can reveal service reachability, and credentials may be attached when the credential store has an entry for the target host. Exploitation requires a victim to perform a pagination-based listing operation against a malicious registry. The maintainer identifies this report as a duplicate of GHSA-3hr5-mjrr-hfjh and states that remediation is consolidated in that earlier advisory. The consolidated issue is fixed in version 2.6.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
oras-project oras-go < 2.6.2 -

II. Public POCs for CVE-2026-85732

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III. Intelligence Information for CVE-2026-85732

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Patches & Fixes for CVE-2026-85732 (2)

Other References for CVE-2026-85732 (1)

IV. Related Vulnerabilities

Same product: oras-go
Same vendor: oras-project
Same weakness: CWE-918

V. Comments for CVE-2026-85732

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