{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88054", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-09T21:22:45.434Z", "datePublished": "2026-09-10T17:39:54.148Z", "dateUpdated": "2026-09-10T18:07:14.601Z"}, "containers": {"cna": {"title": "Tesseract: Denial of service via empty-stack dereference in Plumbing/Series at model load", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-824", "lang": "en", "description": "CWE-824: Access of Uninitialized Pointer", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4"}, {"name": "https://github.com/tesseract-ocr/tesseract/commit/552771236b0d80cbdb0c7dd856120fa21a4672e5", "tags": ["x_refsource_MISC"], "url": "https://github.com/tesseract-ocr/tesseract/commit/552771236b0d80cbdb0c7dd856120fa21a4672e5"}], "affected": [{"vendor": "tesseract-ocr", "product": "tesseract", "versions": [{"version": "<= 5.5.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-10T17:39:54.148Z"}, "descriptions": [{"lang": "en", "value": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, Plumbing::DeSerialize in src/lstm/plumbing.cpp rejects excessively large network stacks but accepts a zero-length stack for NT_SERIES, NT_PARALLEL, or NT_REVERSED layers in a crafted .traineddata model. During LSTMRecognizer initialization in src/lstm/lstmrecognizer.cpp, CacheXScaleFactor(XScaleFactor()) reaches Series::CacheXScaleFactor in src/lstm/series.cpp, which dereferences stack_[0] on the empty vector and invokes a virtual method through an invalid Network pointer. This causes a deterministic crash and denial of service at model load. No fixed release is available as of this review."}], "source": {"advisory": "GHSA-f6h7-cqr4-6fx4", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-10T18:06:46.791495Z", "id": "CVE-2026-88054", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-10T18:07:14.601Z"}}]}}

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{"bugzilla": {"description": "tesseract: Tesseract: Denial of Service via crafted model with empty stack dereference", "id": "2531576", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531576"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in Tesseract, an open-source Optical Character Recognition (OCR) engine. A remote attacker could provide a specially crafted '.traineddata' model with a zero-length stack for certain internal layers. This would cause an empty-stack dereference during model loading, leading to a deterministic crash of the application. This vulnerability results in a Denial of Service (DoS)."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, ensure that Tesseract only processes `.traineddata` models from trusted sources. Avoid loading or using models from untrusted or unverified origins. Additionally, consider running applications that utilize Tesseract in a sandboxed environment to limit the potential impact of a crash."}, "name": "CVE-2026-88054", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "tesseract", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "tesseract", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "tesseract", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-10T17:39:54Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-88054\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-88054\nhttps://github.com/tesseract-ocr/tesseract/commit/552771236b0d80cbdb0c7dd856120fa21a4672e5\nhttps://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4"], "threat_severity": "Moderate"}