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CVE-2026-44796— Nautobot: Object bulk rename UI actions vulnerable to denial of service by crafted regular expression (REDoS)

Quick assessment

Affected
nautobot nautobot
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.

Nautobot是Nautobot个人开发者的一个网络自动化平台。 Nautobot 2.4.33之前版本和3.1.2之前版本存在安全漏洞，该漏洞源于UI对象批量重命名端点中find字段与use_regex标志组合使用恶意构造的正则表达式，可能导致应用程序范围拒绝服务。

CVSS 6.5 · Medium EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
nautobot nautobot >= 3.0.0a2, < 3.1.2 affected
< 2.4.33 affected
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I. Basic Information for CVE-2026-44796

Vulnerability Information
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Vulnerability Title
Nautobot: Object bulk rename UI actions vulnerable to denial of service by crafted regular expression (REDoS)
Source: CVE Program / CVE List V5
Vulnerability Description
Nautobot is a Network Source of Truth and Network Automation Platform. Prior to 2.4.33 and 3.1.2, Nautobot UI object-bulk-rename endpoints (for example, /dcim/interfaces/rename/) were vulnerable to application-wide denial of service via maliciously crafted regular expressions in the find field in combination with the use_regex flag. This vulnerability is fixed in 2.4.33 and 3.1.2.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Nautobot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nautobot是Nautobot个人开发者的一个网络自动化平台。 Nautobot 2.4.33之前版本和3.1.2之前版本存在安全漏洞，该漏洞源于UI对象批量重命名端点中find字段与use_regex标志组合使用恶意构造的正则表达式，可能导致应用程序范围拒绝服务。
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
nautobot nautobot >= 3.0.0a2, < 3.1.2 -

II. Public POCs for CVE-2026-44796

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III. Intelligence Information for CVE-2026-44796

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Patches & Fixes for CVE-2026-44796 (2)

Vendor Advisories for CVE-2026-44796 (1)

Vendor Pages for CVE-2026-44796 (1)

Same Patch Batch · nautobot · 2026-05-28 · 4 CVEs total

CVE-2026-44797 8.5 HIGH Nautobot: Webhook definitions could be used for server-side request forgery (SSRF)
CVE-2026-44798 7.1 HIGH Nautobot: GitRepository.current_head field should not be writable through REST API
CVE-2026-44794 5.4 MEDIUM Nautobot: REST API permits creation of GenericForeignKey references to objects that the us

IV. Related Vulnerabilities

Same product: nautobot
Same vendor: nautobot
Same weakness: CWE-400

V. Comments for CVE-2026-44796

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