Remark42: Cross-Site Scripting (XSS) on /api/v1/img via content-type spoofing

Summary The remark42 image proxy fetches an arbitrary remote URL and re-serves the response from remark42's own origin. The download path decides whether the fetched resource is an image by looking only at the Content-Type header the remote server claims — it never inspects the actual bytes. The...

EUVD-2026-37511

Remark42: Cross-Site Scripting XSS on /api/v1/img via content-type spoofing...

Interpretation Conflict

Overview Affected versions of this package are vulnerable to Interpretation Conflict via the downloadImage process. An attacker can execute arbitrary scripts in the context of the application by tricking a user into visiting a crafted link that proxies malicious content through the image proxy...

GHSA-4C8J-MGM4-QQVP Remark42: Cross-Site Scripting (XSS) on /api/v1/img via content-type spoofing

Summary The remark42 image proxy fetches an arbitrary remote URL and re-serves the response from remark42's own origin. The download path decides whether the fetched resource is an image by looking only at the Content-Type header the remote server claims — it never inspects the actual bytes. The...

CVE-2026-46386

OpenProject’s official docker image ships SECRET_KEY_BASE=OVERWRITE_ME and cookies_serializer = :marshal, creating a deterministic Marshal-deserialization path reachable via the /my/two_factor_devices cookie reader. This enables potential pre-authentication remote code execution, as noted in the ...

CVE-2026-46386 OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`

OpenProject is open-source, web-based project management software. Prior to , the official openproject/openproject Docker image ships ENV SECRETKEYBASE=OVERWRITEME as the default Rails master key. Combined with cookiesserializer = :marshal, this gives any logged-in user a deterministic...

CVE-2026-46386 OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`

OpenProject is open-source, web-based project management software. Prior to , the official openproject/openproject Docker image ships ENV SECRETKEYBASE=OVERWRITEME as the default Rails master key. Combined with cookiesserializer = :marshal, this gives any logged-in user a deterministic...

CVE-2026-46386 OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`

OpenProject is open-source, web-based project management software. Prior to , the official openproject/openproject Docker image ships ENV SECRETKEYBASE=OVERWRITEME as the default Rails master key. Combined with cookiesserializer = :marshal, this gives any logged-in user a deterministic...

Improper Input Validation

Overview github.com/lxc/incus/v6/shared/validate is a None Affected versions of this package are vulnerable to Improper Input Validation. via the imageDownload process. An attacker can overwrite arbitrary files on the host system and potentially execute arbitrary commands as root by supplying a...

Improper Input Validation

Overview Affected versions of this package are vulnerable to Improper Input Validation via the imageDownload process. An attacker can overwrite arbitrary files on the host system and potentially execute arbitrary commands as root by supplying a crafted Incus-Image-Hash header containing directory...

Improper Input Validation

Overview Affected versions of this package are vulnerable to Improper Input Validation via the imageDownload process. An attacker can overwrite arbitrary files on the host system and potentially execute arbitrary commands as root by supplying a crafted Incus-Image-Hash header containing directory...

Improper Input Validation

Overview Affected versions of this package are vulnerable to Improper Input Validation via the imageDownload process. An attacker can overwrite arbitrary files on the host system and potentially execute arbitrary commands as root by supplying a crafted Incus-Image-Hash header containing directory...

Incus has an arbitrary file write on its client due to trusted image hash

Summary An arbitrary file write exists in the Incus client when a malicious image server returns a crafted Incus-Image-Hash header. This can lead to arbitrary command execution as root on the server. Details - cmd/incusd/images.go:611-684 handles source.type=url by HEADing the user-supplied URL,...

GHSA-F6M5-XW2G-XC4X Incus has an arbitrary file write on its client due to trusted image hash

Summary An arbitrary file write exists in the Incus client when a malicious image server returns a crafted Incus-Image-Hash header. This can lead to arbitrary command execution as root on the server. Details - cmd/incusd/images.go:611-684 handles source.type=url by HEADing the user-supplied URL,...

Improper Input Validation

Overview Affected versions of this package are vulnerable to Improper Input Validation via the imageDownload process. An attacker can overwrite arbitrary files on the host system and potentially execute arbitrary commands as root by supplying a crafted Incus-Image-Hash header containing directory...

External Control of File Name or Path

Overview Affected versions of this package are vulnerable to External Control of File Name or Path via a crafted symlink in the templates directory during image import or instance backup restoration processes. An attacker can access and modify arbitrary files on the host system, potentially leadi...

External Control of File Name or Path

Overview Affected versions of this package are vulnerable to External Control of File Name or Path via a crafted symlink in the templates directory during image import or instance backup restoration processes. An attacker can access and modify arbitrary files on the host system, potentially leadi...

External Control of File Name or Path

Overview Affected versions of this package are vulnerable to External Control of File Name or Path via a crafted symlink in the templates directory during image import or instance backup restoration processes. An attacker can access and modify arbitrary files on the host system, potentially leadi...

Incus has arbitrary file read+write on host via templates/ symlink in malicious image

Summary A specially crafted image or instance backup can be used to read or create/write arbitrary files on the host; possibly leading to arbitrary command execution. Details For container images, internal/server/storage/utils.go calls archive.UnpackimageFile, destPath, .... The tar extraction pa...

External Control of File Name or Path

Overview Affected versions of this package are vulnerable to External Control of File Name or Path through the record-output process. An attacker can create or overwrite files on the host system by exploiting a crafted symlink in a container image, which can lead to arbitrary command execution...