CVE-2026-84961 (HIGH): detected in Lambda Docker Images.
Nadie ha tomado este issue todavía.
Evaluación
- Dificultad
- 3/5
- Tiempo estimado
- 1-2 días
- Aptitud para principiantes
- 55/100
- Tipo de issue
- Error
- Claridad
- Bastante claro
- Estado de actividad
- Activo
- Stack tecnológico
- aws, docker, node.js
- Área
- cloud, infrastructure, security
Línea de trabajo
Start by locating the build definitions for the listed Lambda Node.js images and checking how the undici dependency is supplied. Update the affected package from 7.29.0 to a fixed version, then rebuild or inspect the affected images to confirm the vulnerable version is no longer present.
Escrito por el modelo de indexación a partir del texto del issue.
Descripción
CVE Details
| CVE ID | Severity | Affected Package | Installed Version | Fixed Version | Date Published | Date of Scan |
|---|---|---|---|---|---|---|
| CVE-2026-84961 | HIGH |
undici |
7.29.0 |
7.29.1, 8.10.2 |
2026-09-04T17:17:02.227Z |
2026-09-30T10:18:20.696138078Z |
Affected Docker Images
| Image Name | SHA |
|---|---|
public.ecr.aws/lambda/nodejs:latest |
public.ecr.aws/lambda/nodejs@sha256:523ce8499e16c3bff599c94691e1c6a1405aac415c13b95b98dbb9dddd052b77 |
public.ecr.aws/lambda/nodejs:26-preview |
public.ecr.aws/lambda/nodejs@sha256:f5118e838e4efe4462b87cb77b1b255170952560a5766ad9c0d3f30016c57800 |
public.ecr.aws/lambda/nodejs:24 |
public.ecr.aws/lambda/nodejs@sha256:523ce8499e16c3bff599c94691e1c6a1405aac415c13b95b98dbb9dddd052b77 |
public.ecr.aws/lambda/nodejs:22 |
public.ecr.aws/lambda/nodejs@sha256:282bd7028e6d1f365a3a174751634c7a84e12ef8a466cdcf786c3f4d744e743a |
Description
undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supplied checkServerIdentity callback or a custom connector inside the connect option, is silently discarded before it reaches the TLS layer. As a result a peer whose certificate the application's custom checkServerIdentity was written to reject, but which still passes Node's default hostname and chain checks, is accepted when reached through BalancedPool. The Client, Pool, and Agent dispatchers are not affected because they extract the connect and tls options before cloning. This affects undici versions from 7.24.1 up to 7.29.1 and from 8.0.0 up to 8.10.2, and only when the application supplies a function-valued connect or tls option to BalancedPool. Users should upgrade to undici 7.29.1 or 8.10.2.
Remediation Steps
- Update the affected package
undicifrom version7.29.0to7.29.1, 8.10.2.
About this issue
- This issue may not contain all the information about the CVE nor the images it affects.
- This issue will not be updated with new information and the list of affected images may have changed since the creation of this issue.
- For more, visit Lambda Watchdog.
- This issue was created automatically by Lambda Watchdog.
- Lenguaje dominante
- Sin datos de lenguaje
- Estrellas
- 775
- Forks
- 117
- Métricas de merge de PR
- Sin PR fusionados en 30 d
Preparar el entorno
- Sin Dockerfile ni archivo de Docker Compose
- Sin plantilla de pull request
- Leer la guía de contribución
Primeros pasos
- Lee el issue completo y luego la guía de contribución del proyecto.
- Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
- Haz un fork del repositorio y trabaja en una rama.
- Abre un pull request que haga referencia al número del issue.
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