CVE-2026-119339

Name	CVE-2026-119339
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
tesseract (PTS)	bookworm	5.3.0-2	vulnerable
	trixie	5.5.0-1	vulnerable
	forky, sid	5.5.0-1.1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
tesseract	source	(unstable)	(unfixed)

Notes

https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6cj3
https://github.com/tesseract-ocr/tesseract/pull/4657
Fixed by: https://github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f9e67c64f27e (5.5.4)