CVE-2026-2703
4.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Summary
A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::decode_base64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access. The exploit has been made available to the public and could be used for attacks. This patch is called f2d7bf494e5c52706843cf7eb9892821bffb0734. Applying a patch is advised to resolve this issue.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| xlnt-community | xlnt | 1.6.0 | affected |
| xlnt-community | xlnt | 1.6.1 | affected |
Weaknesses
- CWE-193: Off-by-One
- CWE-189: Numeric Error
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://vuldb.com/?id.346649
- https://vuldb.com/?ctiid.346649
- https://vuldb.com/?submit.754377
- https://github.com/xlnt-community/xlnt/issues/137
- https://github.com/oneafter/0128/blob/main/xl1/repro
- https://github.com/xlnt-community/xlnt/commit/f2d7bf494e5c52706843cf7eb9892821bffb0734
- https://github.com/xlnt-community/xlnt/
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