tesseract-ocr Tesseract up to 5.5.3 Weight Matrix Deserialization DeSerialize input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k1.20-

Summaryinfo

A vulnerability was found in tesseract-ocr Tesseract up to 5.5.3. It has been declared as problematic. This impacts the function WeightMatrix::DeSerialize of the component Weight Matrix Deserialization. The manipulation results in input validation. This vulnerability is reported as CVE-2026-119339. The attack requires a local approach. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in tesseract-ocr Tesseract up to 5.5.3. Affected is the function WeightMatrix::DeSerialize of the component Weight Matrix Deserialization. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-119339 since 10/29/2026. The exploitability is told to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 5.5.4 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.1
VulDB Meta Temp Score: 4.1

VulDB Base Score: 2.8
VulDB Temp Score: 2.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Tesseract 5.5.4

Timelineinfo

10/29/2026 CVE reserved
10/30/2026 +1 days Advisory disclosed
10/30/2026 +0 days VulDB entry created
10/30/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CNA: GitHub_M
CVE: CVE-2026-119339 (🔒)

GCVE (CVE): GCVE-0-2026-119339
GCVE (VulDB): GCVE-100-429372

Entryinfo

Created: 10/30/2026 21:31
Changes: 10/30/2026 21:31 (65)
Complete: 🔍
Cache ID: 216::103

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