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    <title>Most recent entries from all</title>
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    <lastBuildDate>Wed, 30 Sep 2026 02:55:29 +0000</lastBuildDate>
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      <title>CVE-2026-49839 — jq --rawfile invalid-state reuse after String too long causes heap-buffer-overflow</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-49839</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jqlang jq&lt;/p&gt;
&lt;p&gt;jq is a command-line JSON processor. Prior to 1.8.2,` jq --rawfile` can turn a handled oversized-string error into invalid-state reuse and a real heap out-of-bounds write in assertion-disabled builds. When jv_load_file(raw=1) reads an attacker-controlled file, it repeatedly appends file chunks to the same jv string accumulator. Once jv_string_append_buf() returns jv_invalid_with_msg(&amp;#34;String too long&amp;#34;), the raw-file loop does not stop. If the file contains at least one more byte, the next loop iteration appends a new chunk to an object that is already invalid. With assertions enabled this aborts in jvp_string_ptr(). With assertions disabled, the invalid object is interpreted as a string object and ASan reports heap-buffer-overflow. This vulnerability is fixed in 1.8.2.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jqlang jq&lt;/p&gt;
&lt;p&gt;jq is a command-line JSON processor. Prior to 1.8.2,` jq --rawfile` can turn a handled oversized-string error into invalid-state reuse and a real heap out-of-bounds write in assertion-disabled builds. When jv_load_file(raw=1) reads an attacker-controlled file, it repeatedly appends file chunks to the same jv string accumulator. Once jv_string_append_buf() returns jv_invalid_with_msg(&amp;#34;String too long&amp;#34;), the raw-file loop does not stop. If the file contains at least one more byte, the next loop iteration appends a new chunk to an object that is already invalid. With assertions enabled this aborts in jvp_string_ptr(). With assertions disabled, the invalid object is interpreted as a string object and ASan reports heap-buffer-overflow. This vulnerability is fixed in 1.8.2.&lt;/p&gt;</content:encoded>
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