--- title: Security advisory: CVE-2026-107590: Out-of-bounds write... description: A low-severity out-of-bounds write vulnerability affects Qt's QTextCodec when using iconv-based encoding. The issue is tracked as CVE-2026-107590. Developers... canonical: https://daily.dev/posts/security-advisory-cve-2026-107590-out-of-bounds-write-vulnerability-in-qtextcodec-iconv-based-enco-gj5jrwyu9 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Security advisory: CVE-2026-107590: Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt | daily.dev og:description: A low-severity out-of-bounds write vulnerability affects Qt's QTextCodec when using iconv-based encoding. The issue is tracked as CVE-2026-107590. Developers... og:url: https://daily.dev/posts/security-advisory-cve-2026-107590-out-of-bounds-write-vulnerability-in-qtextcodec-iconv-based-enco-gj5jrwyu9 og:image: https://api.daily.dev/og/posts/gj5JrWYu9.png og:image:alt: Security advisory: CVE-2026-107590: Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Security advisory: CVE-2026-107590: Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt **[Qt](https://daily.dev/sources/qt)** · 1 min read · 1 upvotes · 0 comments ## Summary A low-severity out-of-bounds write vulnerability affects Qt's QTextCodec when using iconv-based encoding. The issue is tracked as CVE-2026-107590. Developers should update to Qt 6.8.9, 6.11.3, or 6.12.0, or apply the available patch to resolve it. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is CVE-2026-107590 in Qt and how do I fix it? CVE-2026-107590 is a low-severity out-of-bounds write vulnerability in Qt's QTextCodec when using iconv-based encoding. It is fixed by updating to Qt version 6.8.9, 6.11.3, or 6.12.0, or by applying the available patch directly to affected codebases. _Teams tracking Qt CVEs and patch versions can follow fixes like this one on daily.dev._ ## Similar posts on daily.dev - [Security advisory: CVE-2026-107472 Out-of-bounds read vulnerability in QTextCodec TSCII encoding impacts Qt An out-of-bounds read vulnerability in the Qt](https://daily.dev/posts/security-advisory-cve-2026-107472-out-of-bounds-read-vulnerability-in-qtextcodec-tscii-encoding-imp-ahfx9rght) · Qt · 0 upvotes · 0 comments - [Security advisory: Out-of-bounds read vulnerability in QTextCodec::codecForName\(\) in Qt](https://daily.dev/posts/security-advisory-out-of-bounds-read-vulnerability-in-qtextcodec-codecforname-in-qt-fjd6gfyne) · Qt · 1 upvotes · 0 comments - [Security advisory: CVE-2026-107157 Out-of-bounds read vulnerability in QCborValue::fromCbor\(\) impacts Qt Framework](https://daily.dev/posts/security-advisory-cve-2026-107157-out-of-bounds-read-vulnerability-in-qcborvalue-fromcbor-impact-sehtor5ev) · Qt · 0 upvotes · 0 comments - [Security advisory: CVE-2026-105946 Out-of-bounds read vulnerability in NTLM authentication handling impacts Qt](https://daily.dev/posts/security-advisory-cve-2026-105946-out-of-bounds-read-vulnerability-in-ntlm-authentication-handling--fakikzvwv) · Qt · 1 upvotes · 0 comments - [Security advisory: CVE-2026-101201 Out-of-bounds read vulnerability in JSON document parsing functionality impacts Qt Core and Qt 5 Core Compatibility APIs](https://daily.dev/posts/security-advisory-cve-2026-101201-out-of-bounds-read-vulnerability-in-json-document-parsing-functio-8qpkvlkym) · Qt · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#qt](https://daily.dev/tags/qt) [View this post on daily.dev](https://daily.dev/posts/security-advisory-cve-2026-107590-out-of-bounds-write-vulnerability-in-qtextcodec-iconv-based-enco-gj5jrwyu9) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Security advisory: CVE-2026-107590: Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt","url":"https://daily.dev/posts/security-advisory-cve-2026-107590-out-of-bounds-write-vulnerability-in-qtextcodec-iconv-based-enco-gj5jrwyu9","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/security-advisory-cve-2026-107590-out-of-bounds-write-vulnerability-in-qtextcodec-iconv-based-enco-gj5jrwyu9"},"datePublished":"2026-10-27T05:27:08.491Z","dateModified":"2026-10-27T05:27:41.555Z","description":"A low-severity out-of-bounds write vulnerability affects Qt's QTextCodec when using iconv-based encoding. 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