https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 02 Nov 2026 16:32:49 +0000 https://db.gcve.eu/vuln/brew-mongo-orchestration-cve-2026-106435 <p><strong>Affected:</strong> Homebrew: mongo-orchestration</p> <p>### Impact The C extension&#39;s BSON decoder scans a Regex element&#39;s pattern and flags strings with strlen before checking the document&#39;s remaining length, so a crafted truncated Regex element can read past the end of the caller&#39;s buffer. bson.decode and bson.decode_all accept mmap and array buffers, which carry no NUL sentinel; the read can cross into unmapped memory and kill the process with an uncatchable SIGSEGV. Any application decoding untrusted BSON from such buffers is affected — impact is availability only, since the out-of-bounds bytes are never returned as content. NUL-terminated buffers (bytes, bytearray) raise `InvalidBSON` at worst; the driver&#39;s own transport and pure-Python installs are not affected. All releases through 4.18.2 are affected when the C extension is loaded.</p> <p>### Patches Fixed in PyMongo 4.18.3. Malformed Regex elements now raise InvalidBSON on every accepted buffer type; valid documents decode unchanged.</p> <p>### Workarounds Decode untrusted BSON only from NUL-terminated buffers — bytes or bytearray — and copy mmap input first, e.g. bytes(mm[:size]).</p> <p><strong>Affected:</strong> Homebrew: mongo-orchestration</p> <p>### Impact The C extension&#39;s BSON decoder scans a Regex element&#39;s pattern and flags strings with strlen before checking the document&#39;s remaining length, so a crafted truncated Regex element can read past the end of the caller&#39;s buffer. bson.decode and bson.decode_all accept mmap and array buffers, which carry no NUL sentinel; the read can cross into unmapped memory and kill the process with an uncatchable SIGSEGV. Any application decoding untrusted BSON from such buffers is affected — impact is availability only, since the out-of-bounds bytes are never returned as content. NUL-terminated buffers (bytes, bytearray) raise `InvalidBSON` at worst; the driver&#39;s own transport and pure-Python installs are not affected. All releases through 4.18.2 are affected when the C extension is loaded.</p> <p>### Patches Fixed in PyMongo 4.18.3. Malformed Regex elements now raise InvalidBSON on every accepted buffer type; valid documents decode unchanged.</p> <p>### Workarounds Decode untrusted BSON only from NUL-terminated buffers — bytes or bytearray — and copy mmap input first, e.g. bytes(mm[:size]).</p> https://db.gcve.eu/vuln/brew-mongo-orchestration-cve-2026-106435 https://db.gcve.eu/vuln/cve-2026-106435 <p><strong>Affected:</strong> MongoDB Python Driver</p> <p>The MongoDB Python Driver&#39;s binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decode_all API can cause the application process to terminate when the C extension is loaded. The driver&#39;s normal database wire-protocol path does not reach this code.</p> <p><strong>Affected:</strong> MongoDB Python Driver</p> <p>The MongoDB Python Driver&#39;s binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decode_all API can cause the application process to terminate when the C extension is loaded. The driver&#39;s normal database wire-protocol path does not reach this code.</p> https://db.gcve.eu/vuln/cve-2026-106435