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CVE-2026-88051

7.8 · HIGH

Tesseract is an open source OCR engine.

Published Sep 10, 2026tesseract-ocrCWE-787EPSS 0.17%

Overview

CVE-2026-88051 is a high-severity vulnerability affecting tesseract-ocr tesseract_ocr. It was published on September 10, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Tesseract is an open source OCR engine. In version 5.5.3 and earlier, the callback form of GenericVector::read in src/ccutil/genericvector.h reads the independent int32 fields reserved and size_used_ from a .traineddata model without a cap or an invariant check. reserve(reserved) allocates the backing array, but the callback loop writes size_used_ elements. A crafted TESSDATA_INTTEMP component with version_id 4 or later can therefore set reserved to a small value and size_used_ to a large value when fontinfo_table_.read(fp, read_info) is called from src/classify/intproto.cpp, causing a heap out-of-bounds write of FontInfo structures, heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review.

Remediation

Check the references section for vendor advisories and patches from tesseract-ocr. Update tesseract_ocr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
tesseract-ocrtesseract_ocr0Affected

References

GitHubgithub.com/tesseract-ocr/tesseract/commit/56e09ca12e751623fe796ce1554ce704bffd2ef0GitHubgithub.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3GitHubgithub.com/tesseract-ocr/tesseract/security/advisories/GHSA-88qp-4g94-3rf3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-88051?

CVE-2026-88051 is a high-severity vulnerability affecting tesseract-ocr tesseract_ocr. It was published on September 10, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-88051?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-88051?

Check the references section for vendor advisories and patches from tesseract-ocr. Update tesseract_ocr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-88051?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-88051 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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