{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41253", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-04-18T05:27:07.778Z", "datePublished": "2026-04-18T05:27:08.202Z", "dateUpdated": "2026-04-18T05:32:12.583Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unknown", "product": "iTerm2", "vendor": "iTerm2", "versions": [{"lessThanOrEqual": "3.6.9", "status": "affected", "version": "0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "In iTerm2 through 3.6.9, displaying a .txt file can cause code execution via DCS 2000p and OSC 135 data, if the working directory contains a malicious file whose name is valid output from the conductor encoding path, such as a pathname with an initial ace/c+ substring, aka \"hypothetical in-band signaling abuse.\" This occurs because iTerm2 accepts the SSH conductor protocol from terminal output that does not originate from a legitimate conductor session."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-829", "description": "CWE-829 Inclusion of Functionality from Untrusted Control Sphere", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-04-18T05:32:12.583Z"}, "references": [{"url": "https://iterm2.com/downloads.html"}, {"url": "https://blog.calif.io/p/mad-bugs-even-cat-readmetxt-is-not"}, {"url": "https://github.com/gnachman/iTerm2/commit/a9e745993c2e2cbb30b884a16617cd5495899f86"}, {"url": "https://news.ycombinator.com/item?id=47809190"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:iterm2:iterm2:*:*:*:*:*:*:*:*", "versionEndIncluding": "3.6.9"}]}]}]}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In iTerm2 through 3.6.9, displaying a .txt file can cause code execution via DCS 2000p and OSC 135 data, if the working directory contains a malicious file whose name is valid output from the conductor encoding path, such as a pathname with an initial ace/c+ substring, aka \"hypothetical in-band signaling abuse.\" This occurs because iTerm2 accepts the SSH conductor protocol from terminal output that does not originate from a legitimate conductor session."}], "id": "CVE-2026-41253", "lastModified": "2026-04-18T06:16:17.427", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 5.5, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-04-18T06:16:17.427", "references": [{"source": "cve@mitre.org", "url": "https://blog.calif.io/p/mad-bugs-even-cat-readmetxt-is-not"}, {"source": "cve@mitre.org", "url": "https://github.com/gnachman/iTerm2/commit/a9e745993c2e2cbb30b884a16617cd5495899f86"}, {"source": "cve@mitre.org", "url": "https://iterm2.com/downloads.html"}, {"source": "cve@mitre.org", "url": "https://news.ycombinator.com/item?id=47809190"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-829"}], "source": "cve@mitre.org", "type": "Primary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.6.9]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "iTerm2", "source": "cna", "vendor": "iTerm2"}, "product": "iterm2", "vendor": "iterm2"}], "created": "2026-04-18T08:00:05.676202+00:00", "updated": "2026-04-18T08:00:05.676270+00:00", "vendors": ["iterm2", "iterm2$PRODUCT$iterm2"]}