dependabot[bot] opened a new pull request, #980: URL: https://github.com/apache/fesod/pull/980
Bumps [com.alibaba.fastjson2:fastjson2](https://github.com/alibaba/fastjson2) from 2.0.62 to 2.0.63. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/alibaba/fastjson2/releases";>com.alibaba.fastjson2:fastjson2's releases</a>.</em></p> <blockquote> <h2>fastjson 2.0.63版本发布</h2> <h1>FASTJSON 2.0.63 Release Notes</h1> <p><strong>Release Date:</strong> 29 Jul 2026 <strong>Tag:</strong> 2.0.63 (82eda3e)</p> <h2>Overview</h2> <p>This is a security fix release. It hardens AutoType deserialization and fixes several parser robustness issues (OOM / DoS) that can be triggered by crafted input. <strong>All users are strongly recommended to upgrade</strong>, especially applications parsing untrusted JSON or JSONB data.</p> <p>Users who cannot upgrade immediately can mitigate the AutoType issue with <code>-Dfastjson2.parser.safeMode=true</code> (applications not using a custom <code>AutoTypeBeforeHandler</code>).</p> <p>fastjson 1.x users: the same AutoType hardening is available in <strong>fastjson 1.2.84</strong>.</p> <h2>Security Fixes</h2> <ol> <li>Strengthened AutoType type name validation and whitelist verification: type names containing URL-special characters are rejected before reaching the class loader; the accept name text is verified after a whitelist hash match so a hash collision alone cannot whitelist a type; an accept prefix no longer covers <code>ClassLoader</code>/<code>DataSource</code>/<code>RowSet</code> gadget base types — only an accept entry naming the type in full is treated as an explicit opt-in <a href="https://redirect.github.com/alibaba/fastjson2/issues/7703";>#7703</a></li> <li>Limited number literal digits to prevent <code>BigInteger</code> O(n²) DoS with crafted long number literals <a href="https://redirect.github.com/alibaba/fastjson2/issues/7668";>#7668</a> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7694";>#7694</a></li> <li>Fixed JSONB <code>BC_BIGINT</code> declared-length OOM from crafted payloads declaring a huge length <a href="https://redirect.github.com/alibaba/fastjson2/issues/7669";>#7669</a> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7696";>#7696</a></li> <li>Fixed JSONB <code>BC_BINARY</code> declared-length OOM <a href="https://redirect.github.com/alibaba/fastjson2/issues/7669";>#7669</a> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7705";>#7705</a></li> </ol> <h2>Changes & Bug Fixes</h2> <ol start="5"> <li>Fixed missing reference detection for <code>Collection</code> elements (e.g. <code>HashSet</code>), duplicate elements now serialize as <code>$ref</code> when <code>ReferenceDetection</code> is on <a href="https://redirect.github.com/alibaba/fastjson2/issues/7678";>#7678</a> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7701";>#7701</a></li> <li>Fixed Metaspace leak caused by <code>ObjectWriter</code> created in the switch block of <code>getObjectWriterInternal</code> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7626";>#7626</a> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7627";>#7627</a></li> <li>Fixed performance: hoisted <code>getInt</code>/<code>setInt</code> out of lambda to avoid per-call spin <a href="https://redirect.github.com/alibaba/fastjson2/issues/7677";>#7677</a> <a href="https://redirect.github.com/alibaba/fastjson2/issues/7693";>#7693</a></li> <li>Added support for JSONCompiled records <a href="https://redirect.github.com/alibaba/fastjson2/issues/7665";>#7665</a></li> <li>Added warning when a Kotlin class loses field values due to missing kotlin-reflect <a href="https://redirect.github.com/alibaba/fastjson2/issues/7675";>#7675</a></li> </ol> <h2>Maven Dependency Configuration</h2> <h3>Standard Version</h3> <pre lang="xml"><code><dependency> <groupId>com.alibaba.fastjson2</groupId> <artifactId>fastjson2</artifactId> <version>2.0.63</version> </dependency> </code></pre> <h3>Android 5 Optimized Version</h3> <pre lang="xml"><code><dependency> <groupId>com.alibaba.fastjson2</groupId> <artifactId>fastjson2</artifactId> <version>2.0.63.android5</version> </dependency> </code></pre> <h3>Android 8 Optimized Version</h3> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/alibaba/fastjson2/commit/82eda3e44bfca5f282a675e3c7262efb94b95f88";><code>82eda3e</code></a> 2.0.63 release (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7710";>#7710</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/01eab36318f5085690bbc58539f5248f3e6e74ed";><code>01eab36</code></a> fix: detect references for Collection elements (e.g. HashSet) (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7678";>#7678</a>) (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7701";>#7701</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/373cbe728a6873c7af2ca3023ff18eb358d794fa";><code>373cbe7</code></a> fix: JSONB BC_BINARY declared-length OOM (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7669";>#7669</a>) (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7705";>#7705</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/ec47e24c487fdc864bfe0d18e1850398de634cef";><code>ec47e24</code></a> fix: strengthen autoType type name validation and whitelist verification (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7703";>#7703</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/33be4ada0ba8793626ca87e5f0750664c99a450a";><code>33be4ad</code></a> fix: hoist getInt/setInt out of lambda to avoid per-call spin (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7677";>#7677</a>) (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7693";>#7693</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/1357fdccb1e49de88f31935ca60a819cdfcd804a";><code>1357fdc</code></a> fix: JSONB BC_BIGINT declared-length OOM (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7669";>#7669</a>) (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7696";>#7696</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/d6f7de39303a451b4ef74354d247d08b06c04180";><code>d6f7de3</code></a> docs: 修正兼容模式升级说明中的中文错别字 (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7689";>#7689</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/d7ad403f3f96e77cc9f4ad8c760b814d50ab095d";><code>d7ad403</code></a> fix: limit number literal digits to prevent BigInteger O(n²) DoS (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7668";>#7668</a>) (<a href="https://redirect.github.com/alibaba/fastjson2/issues/7694";>#7694</a>)</li> <li><a href="https://github.com/alibaba/fastjson2/commit/f68fd88fa63575b8b2956c8c5458be718023974d";><code>f68fd88</code></a> fix: warn when Kotlin class loses field values due to missing kotlin-reflect ...</li> <li><a href="https://github.com/alibaba/fastjson2/commit/067995902fb586606cccea29aa0579a18b9bbf3a";><code>0679959</code></a> fix: cache ObjectWriter created in switch block of getObjectWriterInternal to...</li> <li>Additional commits viewable in <a href="https://github.com/alibaba/fastjson2/compare/2.0.62...2.0.63";>compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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