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curl

1 tool · 1 release line

Transfer data with URLs (HTTP, HTTPS, FTP, and more). Every tool here carries the same sandbox boundary.

boks curl
Source ↗ Registry ↗

Release lines we maintain · the project decides these

findings shown are the whole project at that line

Tag Resolves to Lifecycle Updated Findings What the tag promises
  • stable — floats, carries security updates
  • unstable — tracks pre-releases, may break
  • eol — frozen, upstream is done

Tools in this project · pick one to inspect

all share one boundary

Tool Capabilities Seccomp Findings Image Description
showing curl from curl@latest → 8.18.0 stable

Findings

H6M2

identical on amd64, arm64 — one table describes both

CVE Sev CVSS Affects Description
CVE-2026-66032 ↗ H 8.7 libssh2 libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftp_open() function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session.
CVE-2026-66033 ↗ H 8.7 libssh2 libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by…
CVE-2026-66034 ↗ H 7.7 libssh2 libssh2 through 1.11.1, fixed in commit a13bb6c, contains a missing bounds check vulnerability that allows a malicious SSH server to trigger an arbitrary-length heap out-of-bounds read and a free of an uninitialized pointer via the…
CVE-2026-66035 ↗ H 7.7 libssh2 libssh2 through 1.11.1, fixed in commit 42e33d8, contains a pre-authentication heap buffer overflow vulnerability that allows a malicious SSH server to corrupt heap metadata in any connecting client by sending a packet with a packet_length…
CVE-2026-14456 ↗ H 7.5 openssl Issue summary: When an OpenSSL QUIC server (Listener SSL object) processes valid QUIC Initial packets for unknown destination connection IDs, it can allocate and queue new incoming channels without enforcing any limit.
CVE-2026-8932 ↗ H 7.5 curl libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse.
CVE-2026-13757 ↗ M 6.2 p11-kit A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing…
CVE-2026-18938 ↗ M 6.2 p11-kit A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability.

1 further advisory matched this image and was assessed not to apply to it — see the VEX document for the reasoning and the evidence

CVE Affects Assessed
CVE-2026-27171 zlib not affected · vex

These are the findings of curl, which ships every tool in this project. boks reports and gates; it never edits an image to clear a finding.

Composition

default nothing — stands alone
runtime none — self-contained
composes not used as a runtime

Some tools are only useful composed: a pip-installed CLI needs python as its runtime, bash pulls in coreutils. boks resolves that for you — -e git,python:flake8 composes explicitly.

Image

image ghcr.io/boks-sh/curl:8.18.0
digest
platforms
size 21 MB unpacked · 1 layer
base scratch
signed cosign · verified
last scan

Sandbox boundary

curl

capabilities

netrw

Filled is granted to every invocation; the rest need --cap at the point of use.

seccomp tier

per tool

default

The syscall filter applied to this tool's entry point. Tools sharing an image do not share a tier.

dotfiles mapped in

read-only unless noted

  • ~/.curlrc
  • ~/.config/curlrc

env passed through

9 forwarded

ALL_PROXYFTP_PROXYHTTPS_PROXYNO_PROXYall_proxyftp_proxyhttp_proxyhttps_proxyno_proxy

Nothing else crosses in. No AWS_*, no SSH_AUTH_SOCK unless you ask.

env set by boks

none

none

per-subcommand

no overrides

Every invocation gets the same boundary. Where a tool needs more for one subcommand only, boks scopes it there rather than granting it everywhere.

Provenance

sbom amd64 ↗ arm64 ↗
attestation amd64 ↗ arm64 ↗
scan report amd64 ↗ arm64 ↗ grype ·
vex amd64 ↗ arm64 ↗

Every image ships a full SBOM and a signed build attestation. Nothing here is a claim you have to take on trust.

8 findings across this project at latest. Counted once per advisory across every image the project builds.