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CVE-2026-64861— Probo: GraphQL Alias-Based Application Layer Denial of Service (DoS)

Quick assessment

Affected

getprobo probo

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.

Probo 是一个专为工程和安全团队设计的可自托管治理、风险与合规（GRC）平台。在 0.222.0 版本之前，其 GraphQL 端点未对别名数量、查询深度或查询复杂度实施限制。攻击者可发送包含数千个别名解析器调用的单个请求，导致服务器端资源过度消耗，进而引发服务性能下降。该问题已在 0.222.0 版本中修复。

CVSS 4.3 · Medium Updated Nov 12, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service

Affected Version Matrix 1

Vendor	Product	Version Range	Status
getprobo	probo	`< 0.222.0`	affected

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Vulnerability Information

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Vulnerability Title

Probo: GraphQL Alias-Based Application Layer Denial of Service (DoS)

Source: CVE Program / CVE List V5

Vulnerability Description

Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Prior to version 0.222.0, the GraphQL endpoint does not enforce restrictions on alias count, query depth, or query complexity. An attacker can send a single request containing thousands of aliased resolver calls, causing excessive server-side resource consumption and service degradation. This issue has been patched in version 0.222.0.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

不加限制或调节的资源分配

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
getprobo	probo	< 0.222.0	-

II. Public POCs for CVE-2026-64861

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-64861

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Other References for CVE-2026-64861 (4)

https://github.com/getprobo/probo/pull/1424 x_refsource_MISC
https://github.com/getprobo/probo/releases/tag/probod%2Fv0.222.0 x_refsource_MISC
https://github.com/getprobo/probo/security/advisories/GHSA-prh2-g8pv-m7p9 x_refsource_CONFIRM
https://github.com/getprobo/probo/commit/bf255b198cb6c9f44cd183c49743c9ffdaa44ce7 x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-64861

Same Patch Batch · getprobo · 2026-11-11 · 5 CVEs total

CVE-2026-76079	7.2 HIGH	Probo: Vertical privilege escalation
CVE-2026-63505	4.9 MEDIUM	Probo: Cross-tenant IDOR via unvalidated FK references
CVE-2026-76080	3.7 LOW	Probo: Unauthenticated cross-tenant and hidden-item disclosure via Query.node in the publi
CVE-2026-76078	3.1 LOW	Probo: Broken access control in public e-signature API

IV. Related Vulnerabilities

Same product: probo

Same vendor: getprobo

Same weakness: CWE-770