CVE-2026-67194

Publié : 29 juillet 2026

Modifié : 29 juillet 2026

Score CVSS

6.5

MEDIUM

Description détaillée

Courier IMAP before 6.0.1 and Courier Mail Server before 2.0.2 allow authenticated IMAP users to crash the imapd process via deeply nested parenthesized SEARCH queries. The SEARCH command parser (alloc_search_key in searchinfo.C) recursively descends on nested parenthesized groups through a mutual recursion chain with alloc_search_andlist() and alloc_search_notkey(), with no depth limit. Courier IMAP has no overall command line length limit, making exploitation trivial. A single IMAP command with ~2500 nested parentheses overflows the 8MB default stack, causing SIGSEGV.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Références et Patchs

https://github.com/svarshavchik/courier-libs/commit/b5b5581aabea3efadf5e2944947ff0214aa3533e https://github.com/svarshavchik/courier/releases/tag/courier%2F2.0.2%2F20260627214309 https://github.com/svarshavchik/courier/releases/tag/courier-imap%2F6.0.1%2F20260627214444 https://packages.debian.org/sid/courier-imap https://www.vulncheck.com/advisories/courier-imap-mail-server-stack-overflow-dos-via-nested-search-queries

Dernières Vulnérabilités

CVE-2026-67429

Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related file-writing modules use caller-controlled output_dir instead of validate_path_with_env_config and its FLYTO_SANDBOX_DIR confinement, allowing attacker-controlled response bytes to be written to arbitrary filesystem paths the process can access. This issue is fixed in version 2.26.6.

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CVE-2026-67428

Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, HTTP-emitting modules including src/core/modules/third_party/developer/http/requests.py, core.api.http_get, core.api.http_post, graphql.query, graphql.mutation, monitor.http_check, communication.slack_send, notification.discord.send_message, notification.slack.send_message, notification.teams.send_message, ai.vision_analyze, verify.visual_diff, browser.proxy_rotate, and the agent and llm inline base_url branch fetch caller-controlled URLs without validate_url_with_env_config, allowing SSRF to internal or metadata endpoints. This issue is fixed in version 2.26.7.

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CVE-2026-67427

Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, the workflow engine variable resolver expands ${env.VAR} for any host environment variable without an allowlist or capability policy check, allowing a workflow parameter to bypass the default capability policy denylist for env.get and env.load_dotenv and exfiltrate secrets through allowed modules. This issue is fixed in version 2.26.6.

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