Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.2, he Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into surgical, invisible modification of all JSON API responses — including privilege escalation, balance manipulation, and authorization bypass. The default transformResponse function at lib/defaults/index.js:124 calls JSON.parse(data, this.parseReviver), where this is the merged config object. Because parseReviver is not present in Axios defaults, not validated by assertOptions, and not subject to any constraints, a polluted Object.prototype.parseReviver function is called for every key-value pair in every JSON response, allowing the attacker to selectively modify individual values while leaving the rest of the response intact. This vulnerability is fixed in 1.15.2.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e187104307 advisory.

    33.0.4 Release

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-30881a5be7 advisory.

    33.0.4 Release

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.2, he Axios     library is vulnerable to a Prototype Pollution Gadget attack that allows any Object.prototype pollution     in the application's dependency tree to be escalated into surgical, invisible modification of all JSON API     responses  including privilege escalation, balance manipulation, and authorization bypass. The default     transformResponse function at lib/defaults/index.js:124 calls JSON.parse(data, this.parseReviver), where     this is the merged config object. Because parseReviver is not present in Axios defaults, not validated by     assertOptions, and not subject to any constraints, a polluted Object.prototype.parseReviver function is     called for every key-value pair in every JSON response, allowing the attacker to selectively modify     individual values while leaving the rest of the response intact. This vulnerability is fixed in 1.15.2.
    (CVE-2026-42044)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
318777	Fedora 43 : nextcloud (2026-e187104307)	Nessus	Fedora Local Security Checks	critical
318764	Fedora 44 : nextcloud (2026-30881a5be7)	Nessus	Fedora Local Security Checks	critical
310518	Linux Distros Unpatched Vulnerability : CVE-2026-42044	Nessus	Misc.	critical

Detections

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CVE-2026-42044

critical

Tenable Plugins

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critical

critical