CVE-2026-55431 Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, coder open app opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the $SESSIONTOKEN placeholder the...

CVE-2026-55431

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, coder open app opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the $SESSIONTOKEN placeholder the...

EUVD-2026-42140

Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, coder open app opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the $SESSIONTOKEN placeholder the...

GHSA-V54H-CP2W-9X4G Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps

Summary coder open app opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the $SESSIONTOKEN placeholder the CLI replaces it with the user's real session token before handing the URL to the OS open handler. Note: Practical exploitation requir...

Coder's session token leaked to arbitrary hosts via `coder open app` for external workspace apps

Summary coder open app opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the $SESSIONTOKEN placeholder the CLI replaces it with the user's real session token before handing the URL to the OS open handler. Note: Practical exploitation requir...

EUVD-2026-32931

In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the SERVICEACCOUNTTOKEN placeholder Canal/Flannel-Calico deployments, the installer substitutes the live Kubernetes ServiceAccount bearer token before logging,...

OESA-2024-2443 python-jwcrypto security update

Implements JWK, JWS, JWE specifications with python-cryptography Security Fixes: VUL-0: CVE-2022-3102: python-jwcrypto: jwcrypto token substitution can lead to authentication bypassCVE-2022-3102 JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to version 1.5.6...

jwcrypto token substitution can lead to authentication bypass

The JWT code can auto-detect the type of token being provided, and this can lead the application to incorrect conclusions about the trustworthiness of the token. Quoting the private disclosure we received : "Under certain circumstances, it is possible to substitute a .. signed JWS with a JWE that...

GHSA-GWP4-MCV4-W95J jwcrypto token substitution can lead to authentication bypass

The JWT code can auto-detect the type of token being provided, and this can lead the application to incorrect conclusions about the trustworthiness of the token. Quoting the private disclosure we received : "Under certain circumstances, it is possible to substitute a .. signed JWS with a JWE that...

PT-2022-20464

Name of the Vulnerable Software and Affected Versions OSV affected versions not specified Description The issue concerns the JWT code's ability to auto-detect token types, potentially leading to incorrect conclusions about token trustworthiness. Under certain circumstances, an attacker can...