GHSA-R488-J9VJ-WX3Q Payload Form Builder has an RCE issue

Impact A vulnerability in @payloadcms/plugin-form-builder in versions = 3.90.0 or = 4.0.0-canary.34...

@payloadcms/plugin-redirects (>=4.0.0-canary.0, <=4.0.0-canary.33), @payloadcms/sdk (>=4.0.0-canary.0, <=4.0.0-canary.33) potentially affected by CVE-2026-105859 via payload (>=4.0.0-canary.0, <=4.0.0-canary.33)

payload NPM version =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.33 Source cves: CVE-2026-105859 Source advisory: OSV:GHSA-F7HX-52Q9-HCRF...

@payloadcms/plugin-redirects (>=4.0.0-canary.0, <=4.0.0-canary.33), @payloadcms/sdk (>=4.0.0-canary.0, <=4.0.0-canary.33) potentially affected by CVE-2026-105859 via payload (>=4.0.0-canary.0, <=4.0.0-canary.33)

payload NPM version =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.33 Source cves: CVE-2026-105859 Source advisory: GHSA-F7HX-52Q9-HCRF...

@payloadcms/plugin-redirects (>=4.0.0-canary.0, <=4.0.0-canary.33), @payloadcms/sdk (>=4.0.0-canary.0, <=4.0.0-canary.33) potentially affected by CVE-2026-105859 via payload (>=4.0.0-canary.0, <=4.0.0-canary.33)

payload NPM version =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.33 Source cves: CVE-2026-105859 Source advisory: SNYK:JS-PAYLOAD-20571316...

@payloadcms/plugin-redirects (>=4.0.0-canary.0, <=4.0.0-canary.33), @payloadcms/sdk (>=4.0.0-canary.0, <=4.0.0-canary.33) potentially affected by CVE-2026-105863 via payload (>=4.0.0-canary.0, <=4.0.0-canary.33)

payload NPM version =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.33 Source cves: CVE-2026-105863 Source advisory: SNYK:JS-PAYLOAD-20570529...

@payloadcms/plugin-redirects (>=4.0.0-canary.0, <=4.0.0-canary.33), @payloadcms/sdk (>=4.0.0-canary.0, <=4.0.0-canary.33) potentially affected by CVE-2026-105863 via payload (>=4.0.0-canary.0, <=4.0.0-canary.33)

payload NPM version =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.33 Source cves: CVE-2026-105863 Source advisory: GHSA-66WR-7VMR-P5JQ...

@payloadcms/plugin-redirects (>=4.0.0-canary.0, <=4.0.0-canary.33), @payloadcms/sdk (>=4.0.0-canary.0, <=4.0.0-canary.33) potentially affected by CVE-2026-105863 via payload (>=4.0.0-canary.0, <=4.0.0-canary.33)

payload NPM version =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.0, =4.0.0-canary.33 Source cves: CVE-2026-105863 Source advisory: OSV:GHSA-66WR-7VMR-P5JQ...

EUVD-2026-93990

Backstage: Insufficient audience validation in the Cloudflare Access auth provider...

@backstage/plugin-auth-backend (>=0.0.0-nightly-20250225023230, <=0.24.5), @backstage/plugin-auth-backend-module-aws-alb-provider (>=0.0.0-nightly-20250225023230, <=0.4.2) +2 more potentially affected by CVE-2026-106457 via @backstage/plugin-auth-backend-module-cloudflare-access-provider (>=0.1.6-next.2, <=0.4.18)

@backstage/plugin-auth-backend-module-cloudflare-access-provider NPM version =0.1.6-next.2, =0.0.0-nightly-20250225023230, =0.0.0-nightly-20250225023230, =0.0.0-nightly-20250225023230, =0.4.2 - @jiteshy/backstage-plugin-synergy-backend 1.2.2 Source cves: CVE-2026-106457 Source advisory:...

Backstage: Insufficient audience validation in the Cloudflare Access auth provider

Impact The Cloudflare Access auth provider verifies a token's signature and team issuer, but affected versions do not verify that the token was issued for the Backstage application. A user holding a valid token for another Access application in the same Cloudflare Zero Trust team may therefore be...

Improper Verification of Cryptographic Signature

Overview @backstage/plugin-auth-backend-module-cloudflare-access-provider is a The cloudflare-access-provider backend module for the auth plugin. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the jwtVerify call in helpers.ts, which verifi...

@backstage/plugin-auth-backend (>=0.0.0-nightly-20250225023230, <=0.24.5), @backstage/plugin-auth-backend-module-aws-alb-provider (>=0.0.0-nightly-20250225023230, <=0.4.2) +2 more potentially affected by CVE-2026-106457 via @backstage/plugin-auth-backend-module-cloudflare-access-provider (>=0.1.6-next.2, <=0.4.18)

@backstage/plugin-auth-backend-module-cloudflare-access-provider NPM version =0.1.6-next.2, =0.0.0-nightly-20250225023230, =0.0.0-nightly-20250225023230, =0.0.0-nightly-20250225023230, =0.4.2 - @jiteshy/backstage-plugin-synergy-backend 1.2.2 Source cves: CVE-2026-106457 Source advisory:...

@backstage/plugin-auth-backend (>=0.0.0-nightly-20250225023230, <=0.24.5), @backstage/plugin-auth-backend-module-aws-alb-provider (>=0.0.0-nightly-20250225023230, <=0.4.2) +2 more potentially affected by CVE-2026-106457 via @backstage/plugin-auth-backend-module-cloudflare-access-provider (>=0.1.6-next.2, <=0.4.18)

@backstage/plugin-auth-backend-module-cloudflare-access-provider NPM version =0.1.6-next.2, =0.0.0-nightly-20250225023230, =0.0.0-nightly-20250225023230, =0.0.0-nightly-20250225023230, =0.4.2 - @jiteshy/backstage-plugin-synergy-backend 1.2.2 Source cves: CVE-2026-106457 Source advisory:...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.14-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.1.8-next.0) +2 more potentially affected by CVE-2026-106455 via @backstage/plugin-techdocs-node (>=0.11.12, <=1.14.6-next.0)

@backstage/plugin-techdocs-node NPM version =0.11.12, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.12-next.0, =0.0.0-nightly-2021111822616, =1.10.8-next.0 Source cves: CVE-2026-106455 Source advisory: GHSA-Q38J-6VCM-2F5M...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260822023239, <=0.4.18-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-20260827035829, <=2.2.3-next.1) +1 more potentially affected by CVE-2026-106455 via @backstage/plugin-techdocs-node (>=1.15.1-next.0, <=1.15.3)

@backstage/plugin-techdocs-node NPM version =1.15.1-next.0, =0.0.0-nightly-20260822023239, =0.0.0-nightly-20260827035829, =0.0.0-nightly-20260823023807, =1.11.4-next.0 Source cves: CVE-2026-106455 Source advisory: OSV:GHSA-Q38J-6VCM-2F5M...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.14-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.1.8-next.0) +2 more potentially affected by CVE-2026-106455 via @backstage/plugin-techdocs-node (>=0.11.12, <=1.14.6-next.0)

@backstage/plugin-techdocs-node NPM version =0.11.12, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.12-next.0, =0.0.0-nightly-2021111822616, =1.10.8-next.0 Source cves: CVE-2026-106455 Source advisory: OSV:GHSA-Q38J-6VCM-2F5M...

Backstage: Improper validation of MkDocs plugin configuration in TechDocs

Impact An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260415031804, <=0.4.14-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-2021111822616, <=2.1.8-next.0) +2 more potentially affected by CVE-2026-106455 via @backstage/plugin-techdocs-node (>=0.11.12, <=1.14.6-next.0)

@backstage/plugin-techdocs-node NPM version =0.11.12, =0.0.0-nightly-20260415031804, =0.0.0-nightly-2021111822616, =0.11.12-next.0, =0.0.0-nightly-2021111822616, =1.10.8-next.0 Source cves: CVE-2026-106455 Source advisory: SNYK:JS-BACKSTAGEPLUGINTECHDOCSNODE-20825496...

EUVD-2026-93986

Backstage: Improper validation of MkDocs plugin configuration in TechDocs...

@backstage/plugin-search-backend-module-techdocs (>=0.0.0-nightly-20260822023239, <=0.4.18-next.0), @backstage/plugin-techdocs-backend (>=0.0.0-nightly-20260827035829, <=2.2.3-next.1) +1 more potentially affected by CVE-2026-106455 via @backstage/plugin-techdocs-node (>=1.15.1-next.0, <=1.15.3)

@backstage/plugin-techdocs-node NPM version =1.15.1-next.0, =0.0.0-nightly-20260822023239, =0.0.0-nightly-20260827035829, =0.0.0-nightly-20260823023807, =1.11.4-next.0 Source cves: CVE-2026-106455 Source advisory: SNYK:JS-BACKSTAGEPLUGINTECHDOCSNODE-20825496...