CVE-2026-119339: tesseract · Improper Input Validation
Affects tesseractSource CVE Database V5
Not known to be exploited · CVSS 5.5 Medium : upgrade to 5.5.4 when convenient.
Data as of 30 Oct 2026, 22:36 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 5.5 |
|---|
- Patch
- Available – fixed in 5.5.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade tesseract and tesseract-ocr/tesseract to 5.5.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| tesseract-ocrtesseract | Affected
| Fixed in
|
GitHubtesseract-ocr/tesseractpkg:github/tesseract-ocr/tesseractOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Tesseract to version 5.5.4 or later, where this vulnerability is fixed. No other mitigations are indicated or necessary as the fix addresses the root cause.
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.
References
- github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6cj3 (opens in a new tab)
- github.com/tesseract-ocr/tesseract/pull/4657 (opens in a new tab)
- github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f9e67c64f27e (opens in a new tab)
- github.com/tesseract-ocr/tesseract/releases/tag/5.5.4 (opens in a new tab)