CVE-2026-119341
Tesseract: File-controlled pointers still reach `delete` in ADAPT_CLASS_STRUCT destructor
Tesseract is an open source OCR engine. Prior to 5.5.4, ReadAdaptedClass in src/classify/adaptive.cpp raw-reads an ADAPT_CLASS_STRUCT from a pre-adapted-template .a file without neutralizing TempProtos and Config pointer fields before any destructor path. When the legacy engine is selected, classify_use_pre_adapted_templates is enabled, and an attacker can write the output-basename .a file, the success or rejection path can pass file-controlled pointers to ~ADAPT_CLASS_STRUCT and operator delete, causing memory corruption and denial of service. This issue is fixed in version 5.5.4.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| tesseract tesseract-ocr |
< 5.5.3 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 0.0 none |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N | CNA: GitHub_M |
Exploit evidence
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-357f-833m-3f83
exploit · ADP: CISA-ADP
References
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-357f-833m-3f83CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/tesseract-ocr/tesseract/pull/4645CNA: GitHub_M · x_refsource_MISC
- https://github.com/tesseract-ocr/tesseract/commit/614e971036d2b95d521057ff63d68d6612429b23CNA: GitHub_M · x_refsource_MISC
- https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4CNA: GitHub_M · x_refsource_MISC
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-357f-833m-3f83ADP: CISA-ADP · exploit
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