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Back to active CVEs
Medium · CVSS 5.9CVE-2026-101998

Fail-open response masking in Docker Sandboxes can expose proxy-managed credentialsCVE-2026-101998

Answer in brief

CVE-2026-101998 records a Medium severity (CVSS 5.9) vulnerability in Fail-open response masking in Docker Sandboxes can expose proxy-managed credentials. The current sources do not mark it as known exploited. The current feed maps Docker/Docker Sandboxes (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 8, 2026Updated Oct 8, 2026Source checked Oct 8, 2026First seen by HOL Oct 8, 2026Material review Oct 8, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Docker/Docker Sandboxes (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Docker/Docker Sandboxesgeneric>=0.21.0 <0.47.00.47.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Docker/Docker Sandboxes.
  2. 2Review the reported fix. Source-reported solution: Upgrade to Docker Sandboxes 0.47.0 or later.

Evidence timeline and material changes

  1. Published upstream

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 8, 2026

Sources and claim methodology

  • Source referencedocs.docker.com
  • Source referencedocs.docker.com
Upstream source description

Docker Sandboxes could fail open while masking credentials in protected proxy responses. When a response-body read returned data together with an error, affected handlers could forward unmasked bytes. Code inside an authorized sandbox could use this to recover host-managed OAuth access and refresh tokens or a derived Anthropic API key intended to remain outside the sandbox.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Docker Sandboxes egress proxy could forward unrecognized client credentials to managed hostsSame docker/docker sandboxes package
  • Docker Sandboxes OAuth response masking could be bypassed with a case-variant token hostSame docker/docker sandboxes package
  • TVU Networks Receiver/Transceiver Authentication Bypass via /tvu/LoginSame generic ecosystem
  • TVU Networks Receiver/Transceiver Missing Authentication via REST APISame generic ecosystem
  • Out-of-bounds read in SCRAM response parsing in MongoDB C DriverSame generic ecosystem
  • Application denial of service via malformed KMS endpoint in MongoDB libmongocryptSame generic ecosystem

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-636
Source
CVE List V5
Source checked
Oct 8, 2026
References
2 linked sources
Open source record