PT-2026-22730 · Xlnt Community · Xlnt

Oneafter · Publicado 2026-03-03 · Atualizado 2026-03-10 · CVE-2026-3463

Positive Technologies (AI Summary)

CVSS v3.1

7.8

Alta

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions xlnt-community xlnt versions up to 1.6.1

Description A flaw exists in xlnt-community xlnt up to version 1.6.1 related to the xlnt::detail::binary writer::append function within the source/detail/binary.hpp file of the Compound Document Parser component. This issue results in a heap-based buffer overflow. The exploitation of this issue is limited to local execution. The exploit code has been publicly released.

Recommendations Install patch 147 to address this issue.

Exploit

Correção

Buffer Overflow

Heap Based Buffer Overflow

Enumeração de Fraquezas

CWE-119

CWE-122

Identificadores relacionados

CVE-2026-3463

Produtos afetados

Xlnt

Referências · 17

• 🔥 https://github.com/oneafter/0128/blob/main/xl2/repro · Exploit
• https://github.com/xlnt-community/xlnt/issues/138#issuecomment-3868381672 · Nota
• https://github.com/xlnt-community/xlnt/issues/138 · Aviso do Fabricante
• https://github.com/xlnt-community/xlnt/pull/147 · Correção
• https://vuldb.com/?id.348530 · Nota
• https://twitter.com/CVEnew/status/2028820659602874426 · Publicação no Twitter
• https://osv.dev/vulnerability/CVE-2026-3463 · Aviso do Fabricante
• https://vuldb.com/?submit.764643 · Nota
• https://t.me/CVEtracker/46198 · Publicação no Telegram
• https://twitter.com/VulmonFeeds/status/2028811556960563503 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-3463 · Nota de Segurança
• https://twitter.com/cyberbivash/status/2028813415217553855 · Publicação no Twitter
• https://twitter.com/infoflowcloud/status/2028821551907258778 · Publicação no Twitter
• https://vuldb.com/?ctiid.348530 · Nota
• https://github.com/xlnt-community/xlnt · Nota