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CVE-2026-115638

Quick assessment

Affected
OpenStack Ironic
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.

OpenStack Ironic（版本至 39.0.1）存在一个拒绝服务漏洞：攻击者可通过配置镜像（configdrive）注入经过压缩的超大体积数据（即"gzip 炸弹”），在解压时消耗大量系统资源，从而导致服务不可用。

CVSS 4.3 · Medium EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
OpenStack Ironic 30.0.0≤ 32.1.1 affected
33.0.0≤ 35.1.1 affected
36.0.0≤ 39.0.1 affected
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I. Basic Information for CVE-2026-115638

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.
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
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenStack Ironic 30.0.0 ~ 32.1.1 -

II. Public POCs for CVE-2026-115638

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III. Intelligence Information for CVE-2026-115638

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Other References for CVE-2026-115638 (1)

Same Patch Batch · OpenStack · 2026-10-23 · 3 CVEs total

CVE-2026-90458 5.4 MEDIUM OpenStack Ironic 39.0.1 前版本存在越权漏洞
CVE-2026-89419 5.0 MEDIUM OpenStack Ironic 39.0.1 前版本节点维护设置绕过漏洞

IV. Related Vulnerabilities

Same product: Ironic
Same vendor: OpenStack
Same weakness: CWE-409

V. Comments for CVE-2026-115638

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