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Fencer Vulns
medium 5.5

CVE-2026-119339 json

Tesseract: Crafted LSTM model (`WeightMatrix` mode byte) triggers `ASSERT_HOST` abort in `WeightMatrix::DeSerializeOld` under `FAST_FLOAT` — Denial of Service

published 2026-10-30 9 d ago modified 2026-11-02 6 d ago also EUVD-2026-114447

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

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.

Patch / fix

  • tesseract_project tesseract 5.5.4
  • tesseract_ocr_project tesseract_ocr 5.5.4
  • tesseract-ocr openSUSE Tumbleweed 5.5.4-2.1

opensuse advisories openSUSE-SU-2026:12411-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-119339 updated cvss 5.5

tesseract: Tesseract: Denial of service via crafted trained model file

  • Red Hat Enterprise Linux 8 tesseract, tesseract 5.3.4-7.el10_2 Red Hat Enterprise Linux 9 tesseract, tesseract 5.3.4-7.el10_2 Red Hat Enterprise Linux 10 tesseract 5.3.4-7.el10_2
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 d ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • tesseract-ocr tesseract

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.