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Vulnerability · Published Oct 30, 2026 · Assigned by GitHub_M

CVE-2026-119338Tesseract: Double free and use after free in the PAGE XML renderer on right-to-left pages

Medium 6.9

In plain English

A medium-severity out-of-bounds read in tesseract from tesseract-ocr. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.1%top 96.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

Tesseract is an open source OCR engine. From 5.4.0 until 5.5.4, AppendLinePolygon in src/api/pagerenderer.cpp destroys the caller-owned right-to-left Pta accumulator while receiving it by value, leaving line_top_rtl_pts and line_bottom_rtl_pts dangling. On an upright Hebrew or Arabic page at the default PAGE XML level, POLYGONFLAG with a false skewed_flag enters the vulnerable calls, while LEVELFLAG greater than zero provides an alternative gate. The calls repeatedly read and free the stale object, causing a double free and use after free and allowing corrupted coordinates to reach RecalcPolygonline. This issue is fixed in version 5.5.4.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12tesseractno fix listedDEBIAN-CVE-2026-119338
Debian:13tesseractno fix listedDEBIAN-CVE-2026-119338
Debian:14tesseractno fix listedDEBIAN-CVE-2026-119338
Ubuntu:26.10tesseractno fix listedUBUNTU-CVE-2026-119338

Affected products (as reported)

VendorProductVersions
tesseract-ocr tesseract >= 5.4.0, < 5.5.4

Weakness: CWE-125, CWE-415, CWE-416 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

References