CVE-2025-0495

Impact

Some cache backends allow configuring their credentials by setting secrets directly as attribute values in cache-to/cache-from configuration. If this was done by the user, these secure values could be captured together with OpenTelemetry trace as part of the arguments and flags for the traced CLI command. Passing tokens to Github cache backend via environment variables or using registry authentication is not affected.

If you passed a token value like this and use a custom OpenTelemetry collector for computing traces you should make sure that your traces are kept secure. OpenTelemetry traces are also saved in BuildKit daemon's history records.

Patches

Issue has been fixed in Buildx v0.21.3 or newer.

Workarounds

Avoid passing cache backend credentials with CLI arguments. Make sure access to traces and BuildKit history records is kept secure.

Buildx is a Docker CLI plugin that extends build capabilities using BuildKit. Cache backends support credentials by setting secrets directly as attribute values in cache-to/cache-from configuration. When supplied as user input, these secure values may be inadvertently captured in OpenTelemetry traces as part of the arguments and flags for the traced CLI command. OpenTelemetry traces are also saved in BuildKit daemon's history records. This vulnerability does not impact secrets passed to the Github cache backend via environment variables or registry authentication.

Buildx is a Docker CLI plugin that extends build capabilities using BuildKit.

Cache backends support credentials by setting secrets directly as attribute values in cache-to/cache-from configuration. When supplied as user input, these secure values may be inadvertently captured in OpenTelemetry traces as part of the arguments and flags for the traced CLI command. OpenTelemetry traces are also saved in BuildKit daemon's history records.

This vulnerability does not impact secrets passed to the Github cache backend via environment variables or registry authentication.

Buildx is a Docker CLI plugin that extends build capabilities using BuildKit.

Cache backends support credentials by setting secrets directly as attribute values in cache-to/cache-from configuration. When supplied as user input, these secure values may be inadvertently captured in OpenTelemetry traces as part of the arguments and flags for the traced CLI command. OpenTelemetry traces are also saved in BuildKit daemon's history records.

This vulnerability does not impact secrets passed to the Github cache backend via environment variables or registry authentication.

buildx allows a possible credential leakage to telemetry endpoint in github.com/docker/buildx

These are all security issues fixed in the govulncheck-vulndb-0.0.20250318T181448-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the docker-stable-24.0.9_ce-9.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the docker-27.5.1_ce-15.1 package on the GA media of openSUSE Tumbleweed.

This update for docker-compose fixes the following issues

• CVE-2025-0495: buildx: credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239766).
• CVE-2025-22869: golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239340).
• CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265782).
• CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266625).

This update for docker fixes the following issues:

Update to Docker 28.2.2-ce (bsc#1243833, bsc#1242114):

• CVE-2025-0495: Fixed credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration.(bsc#1239765)
• CVE-2025-22872: golang.org/x/net/html: incorrectly interpreted tags can cause content to be placed wrong scope during DOM construction (bsc#1241830).

Other fixes:

• Update to docker-buildx v0.22.0.
• Always clear SUSEConnect suse_* secrets when starting containers (bsc#1244035).
• Disable transparent SUSEConnect support for SLE-16. (jsc#PED-12534)
• Now that the only blocker for docker-buildx support was removed for SLE-16, enable docker-buildx for SLE-16 as well. (jsc#PED-8905)
• SUSEConnect secrets fails in SLES rootless docker containers (bsc#1240150).

This update for docker fixes the following issues:

Update to Docker 28.2.2-ce (bsc#1243833, bsc#1242114):

• CVE-2025-0495: Fixed credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration.(bsc#1239765)
• CVE-2025-22872: golang.org/x/net/html: incorrectly interpreted tags can cause content to be placed wrong scope during DOM construction (bsc#1241830).

Other fixes:

• Update to docker-buildx v0.22.0.
• Always clear SUSEConnect suse_* secrets when starting containers (bsc#1244035).
• Disable transparent SUSEConnect support for SLE-16. (jsc#PED-12534)
• Now that the only blocker for docker-buildx support was removed for SLE-16, enable docker-buildx for SLE-16 as well. (jsc#PED-8905)
• SUSEConnect secrets fails in SLES rootless docker containers (bsc#1240150).

This update for docker fixes the following issues:

• Update to docker-buildx v0.22.0
• CVE-2025-0495: Fixed an integer overflow in User ID handling in containerd. (bsc#1239765)

This update for docker-stable fixes the following issues:

• CVE-2025-0495: buildx: Fixed credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239765)

Other fixes:

• Update to docker-buildx v0.22.0.
• Disable transparent SUSEConnect support for SLE-16. (jsc#PED-12534)
• Now that the only blocker for docker-buildx support was removed for SLE-16, enable docker-buildx for SLE-16 as well. (jsc#PED-8905)

This update for docker fixes the following issues:

• Updated to docker-buildx v0.22.0.
• Updated to Docker 27.5.1-ce.
• CVE-2025-0495: buildx: Fixed credential leakage to telemetry endpoints (bsc#1239765)
• CVE-2025-22868: Fixed golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in golang.org/x/oauth2 (bsc#1239185)
• CVE-2025-22869: Fixed golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239322).
• CVE-2024-29018:moby: external DNS requests from 'internal' networks could lead to data exfiltration (bsc#1234089)
• Make container-selinux requirement conditional on selinux-policy (bsc#1237367)

This update for docker fixes the following issues:

Update to docker-buildx v0.22.0:

• CVE-2025-0495: buildx: credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239765).
• CVE-2025-22868: golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in golang.org/x/oauth2 (bsc#1239185).
• CVE-2025-22869: golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239322).

Bug fixes:

• Fix unconditional container-selinux pull (bsc#1237367).

This update for docker-compose fixes the following issues

• CVE-2025-0495: buildx: credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239766).
• CVE-2025-22869: golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239340).
• CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265782).
• CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266625).

This update for docker-compose fixes the following issues

• CVE-2025-0495: buildx: credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239766).
• CVE-2025-22869: golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239340).
• CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265782).
• CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266625).

This update for docker-compose fixes the following issues

• CVE-2025-0495: buildx: credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239766).
• CVE-2025-22869: golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239340).
• CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265782).
• CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266625).

This update for docker-compose fixes the following issues

• CVE-2025-0495: buildx: credential leakage to telemetry endpoints when credentials allowed to be set as attribute values in cache-to/cache-from configuration (bsc#1239766).
• CVE-2025-22869: golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (bsc#1239340).
• CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265782).
• CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266625).