What is CVE-2026-119339?

CVE-2026-119339 is a medium-severity vulnerability in Tesseract-Ocr Tesseract, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2026-10-30.

How severe is CVE-2026-119339?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Improper input validation in Tesseract-Ocr Tesseract

CVE-2026-119339

Tesseract is an open source OCR engine. Prior to 5.5.4, WeightMatrix::DeSerialize trusts a mode byte from a traineddata LSTM network and calls WeightMatrix::DeSerializeOld when kDoubleFlag is clear. In default FAST_FLOAT builds, DeSerializeOld invokes ASSERT_HOST instead of returning an error, so loading a crafted model through TessBaseAPI::Init terminates the process and causes denial of service. This issue is fixed in version 5.5.4.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-10-30 · last modified 2026-10-30.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tesseract-Ocr Tesseract — versions < 5.5.4

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-119339?: CVE-2026-119339 is a medium-severity vulnerability in Tesseract-Ocr Tesseract, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2026-10-30.
How severe is CVE-2026-119339?: Medium severity. CVSS v3 base score is 5.5 out of 10.