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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[DRIVERS-133] Drivers should not allow sending _ids with a key starting with $</title>
                <link>https://jira.mongodb.org/browse/DRIVERS-133</link>
                <project id="10980" key="DRIVERS">Drivers</project>
                    <description>&lt;p&gt;Raised this in as &lt;a href=&quot;https://jira.mongodb.org/browse/PYTHON-623&quot; title=&quot;Python driver should not allow sending _ids with a key starting with $&quot; class=&quot;issue-link&quot; data-issue-key=&quot;PYTHON-623&quot;&gt;&lt;del&gt;PYTHON-623&lt;/del&gt;&lt;/a&gt; first, but after discussion with &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=jesse&quot; class=&quot;user-hover&quot; rel=&quot;jesse&quot;&gt;jesse&lt;/a&gt; this should probably be a more general discussion amongst all drivers. &lt;/p&gt;

&lt;p&gt;See also related &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12209&quot; title=&quot;_id with $prefix field causes replication failure due to unvalidated insert&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12209&quot;&gt;&lt;del&gt;SERVER-12209&lt;/del&gt;&lt;/a&gt; ticket where this issue came up.&lt;/p&gt;

&lt;p&gt;Sending a document with _id of extended JSON form to a primary will succeed but crash all secondaries immediately upon replication. &lt;/p&gt;

&lt;p/&gt;
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&lt;p/&gt;

&lt;p&gt;Some drivers seem to validate for such cases (key starts with $ in nested sub-document) and reject the write, while others (I only tested with Python so far) don&apos;t. The behavior should be consistent.&lt;/p&gt;

&lt;p&gt;Another discussion point is whether these validations should happen on the driver or server side. Currently --objcheck seems not to protect the server from such _ids. &lt;/p&gt;
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                <environment></environment>
        <key id="105630">DRIVERS-133</key>
            <summary>Drivers should not allow sending _ids with a key starting with $</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="barrie">Barrie Segal</assignee>
                                    <reporter username="thomas.rueckstiess@mongodb.com">Thomas Rueckstiess</reporter>
                        <labels>
                    </labels>
                <created>Sat, 11 Jan 2014 05:09:09 +0000</created>
                <updated>Mon, 15 Apr 2019 17:29:30 +0000</updated>
                            <resolved>Wed, 22 Jun 2016 16:24:34 +0000</resolved>
                                                                            <votes>0</votes>
                                    <watches>12</watches>
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            <issuekey id="183386">CXX-518</issuekey>
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            <issuekey id="103781">SERVER-12209</issuekey>
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            <issuekey id="105628">PYTHON-623</issuekey>
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