CVE-2026-88054

medium

Tesseract is an open source OCR engine.

Vendor / product: Tesseract-ocr — tesseract ocr

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.

CVSS

5.5

5.5 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2026-09-10 18:18

Modified: 2026-09-16 16:14

NVD status: Analyzed

Last synced 2 days ago

Verified against the source API 2026-10-27 06:52 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

tesseract-ocr / tesseract_ocr ≤5.5.3

Weakness classification (CWE)

CWE-125 CWE-824

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4

Patch / mitigation: https://github.com/tesseract-ocr/tesseract/commit/552771236b0d80cbdb0c7dd856120fa21a4672e5

Patch / mitigation: https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4

References

https://github.com/tesseract-ocr/tesseract/commit/552771236b0d80cbdb0c7dd856120fa21a4672e5 security-advisories@github.com
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4 security-advisories@github.com
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗

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CVE-2026-88054

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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