CVE-2025-22150 — Use of Insufficiently Random Values

Vendor	Product	Version range	Fixed in
debian	node-undici	< node-undici 7.3.0+dfsg1+~cs24.12.11-1 (forky)	node-undici 7.3.0+dfsg1+~cs24.12.11-1 (forky)
nodejs	undici	—	—
nodejs	undici	—	—
nodejs	undici	—	—
nodejs	undici	>= 4.5.0 < 5.28.5	5.28.5
nodejs	undici	>= 6.0.0 < 6.21.1	6.21.1
nodejs	undici	>= 7.0.0 < 7.2.3	7.2.3

OSV

Use of Insufficiently Random Values in undici

osv·2025-01-21

CVE-2025-22150 [MEDIUM] Use of Insufficiently Random Values in undici Use of Insufficiently Random Values in undici ### Impact [Undici `fetch()` uses Math.random()](https://github.com/nodejs/undici/blob/8b06b8250907d92fead664b3368f1d2aa27c1f35/lib/web/fetch/body.js#L113) to choose the boundary for a multipart/form-data request. It is known that the output of Math.random() can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, An attacker can tamper with the requests going to the backend APIs if certain conditions are met. ### Patches This is fixed in 5.28.5; 6.21.1; 7.2.3. ### Workarounds Do not issue multipart requests to attacker controlled servers. ### References * https://hackerone.

GHSA

Use of Insufficiently Random Values in undici

ghsa·2025-01-21

CVE-2025-22150 [MEDIUM] CWE-330 Use of Insufficiently Random Values in undici Use of Insufficiently Random Values in undici ### Impact [Undici `fetch()` uses Math.random()](https://github.com/nodejs/undici/blob/8b06b8250907d92fead664b3368f1d2aa27c1f35/lib/web/fetch/body.js#L113) to choose the boundary for a multipart/form-data request. It is known that the output of Math.random() can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, An attacker can tamper with the requests going to the backend APIs if certain conditions are met. ### Patches This is fixed in 5.28.5; 6.21.1; 7.2.3. ### Workarounds Do not issue multipart requests to attacker controlled servers. ### References * https://hackerone.

OSV

CVE-2025-22150: Undici is an HTTP/1

osv·2025-01-21·CVSS 6.8

CVE-2025-22150 [MEDIUM] CVE-2025-22150: Undici is an HTTP/1 Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5.28.5, 6.21.1, and 7.2.3, undici uses `Math.random()` to choose the boundary for a multipart/form-data request. It is known that the output of `Math.random()` can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, an attacker can tamper with the requests going to the backend APIs if certain conditions are met. This is fixed in versions 5.28.5, 6.21.1, and 7.2.3. As a workaround, do not issue multipart requests to attacker controlled servers.

Red Hat

undici: Undici Uses Insufficiently Random Values

vendor_redhat·2025-01-21·CVSS 6.8

CVE-2025-22150 [MEDIUM] CWE-330 undici: Undici Uses Insufficiently Random Values undici: Undici Uses Insufficiently Random Values Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5.28.5, 6.21.1, and 7.2.3, undici uses `Math.random()` to choose the boundary for a multipart/form-data request. It is known that the output of `Math.random()` can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, an attacker can tamper with the requests going to the backend APIs if certain conditions are met. This is fixed in versions 5.28.5, 6.21.1, and 7.2.3. As a workaround, do not issue multipart requests to attacker controlled servers. A flaw was found in the undici package for Node.js. Undici

Debian

CVE-2025-22150: node-undici - Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5....

vendor_debian·2025·CVSS 6.8

CVE-2025-22150 [MEDIUM] CVE-2025-22150: node-undici - Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5.... Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5.28.5, 6.21.1, and 7.2.3, undici uses `Math.random()` to choose the boundary for a multipart/form-data request. It is known that the output of `Math.random()` can be predicted if several of its generated values are known. If there is a mechanism in an app that sends multipart requests to an attacker-controlled website, they can use this to leak the necessary values. Therefore, an attacker can tamper with the requests going to the backend APIs if certain conditions are met. This is fixed in versions 5.28.5, 6.21.1, and 7.2.3. As a workaround, do not issue multipart requests to attacker controlled servers. Scope: local bookworm: open forky: resolved (fixed in 7.3.0+dfsg1+~cs24.12.11-1) sid: resolved (fixed in 7.3.

CVE-2025-22150: Undici is an HTTP/1.1 client. Starting in version 4.5.0 and prior to versions 5.28.5, 6.21.1, and 7.2.3, undici uses `Math.random()` to choose the boundary for…

Affected

CVSS provenance