Signal is active with 5 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. Patch name: 147. It is suggested to install a patch to address this issue.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-3463 A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of … https://www.cve.org/CVERecord?id=CVE-2026-3463
Post summary
A weakness has been identified in xlnt-community xlnt up to version 1.6.1, affecting the binary_writer::append function in source/detail/binary.hpp.
CVE-2026-3463 Heap-Based Buffer Overflow in xlnt-community xlnt 1.6.1 via Binary... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-3463 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1
Post summary
A heap-based buffer overflow vulnerability (CVE-2026-3463) was disclosed in xlnt-community xlnt 1.6.1, with details available on Vulmon, but no PoC, exploit, or patch information is provided.
🚨*CVE* CVE-2026-3463 A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of … https://www.cve.org/CVERecord?id=CVE-2026-3463 ----- Traducción: CVE-2026-3463 Se … http://infoflow.cloud`
Post summary
A weakness in xlnt-community xlnt up to version 1.6.1 affecting the binary_writer::append function has been disclosed, with details available on CVE.org.
🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-3463 xlnt-community xlnt Compound Document binary.hpp append heap-based overflow Intel Report: https://ift.tt/WPFgBZf
Post summary
An alert announces CVE-2026-3463, a heap-based overflow in xlnt-community's Compound Document binary.hpp, and provides a link to an Intel report.
🚨 CYBERDUDEBIVASH SENTINEL APEX ALERT 🚨 Threat: CVE-2026-3463 Intel Report: https://ift.tt/QrhCp1R
Post summary
A threat alert referencing CVE-2026-3463 with a link to an Intel Report, but no further details or actionable information are provided.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | xlnt-community | xlnt | - | - | - |