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Vulnerability · Published May 28, 2026 · Assigned by GitHub_M

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

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in nautobot from nautobot. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 75.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPInautobot3.1.2GHSA-qrpw-gjvh-x5gm
PyPInautobot2.4.33GHSA-qrpw-gjvh-x5gm
PyPInautobot2.4.33, 3.1.2PYSEC-2026-2226

Affected products (as reported)

VendorProductVersions
nautobot nautobot >= 3.0.0a2, < 3.1.2< 2.4.33

Weakness: CWE-400, CWE-1333 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References