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40 vulnerabilities found for libxls by libxls_project
CVE-2026-26825 (GCVE-0-2026-26825)
Vulnerability from nvd – Published: 2026-06-03 00:00 – Updated: 2026-06-08 16:41
VLAI
Summary
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialized heap memory originating from the OLE layer (ole2_read). The flaw is detectable with MemorySanitizer (MSAN) and can lead to undefined behavior, incorrect parsing logic, or potential information disclosure.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
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CVE-2026-26824 (GCVE-0-2026-26824)
Vulnerability from nvd – Published: 2026-06-03 00:00 – Updated: 2026-06-04 12:25
VLAI
Summary
libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
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CVE-2023-38856 (GCVE-0-2023-38856)
Vulnerability from nvd – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:37
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the get_string function in xlstool.c:411.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38855 (GCVE-0-2023-38855)
Vulnerability from nvd – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:38
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the get_string function in xlstool.c:395.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38854 (GCVE-0-2023-38854)
Vulnerability from nvd – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:39
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the transcode_latin1_to_utf8 function in xlstool.c:296.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38853 (GCVE-0-2023-38853)
Vulnerability from nvd – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:40
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the xls_parseWorkBook function in xls.c:1015.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38852 (GCVE-0-2023-38852)
Vulnerability from nvd – Published: 2023-08-15 00:00 – Updated: 2025-11-04 22:04
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the unicode_decode_wcstombs function in xlstool.c:266.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
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CVE-2023-38851 (GCVE-0-2023-38851)
Vulnerability from nvd – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:41
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the xls_parseWorkBook function in xls.c:1018.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2021-27836 (GCVE-0-2021-27836)
Vulnerability from nvd – Published: 2021-11-03 16:07 – Updated: 2024-08-03 21:33
VLAI
Summary
An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, via a crafted XLS file.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libxls/libxls/issues/94 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2020-27819 (GCVE-0-2020-27819)
Vulnerability from nvd – Published: 2021-02-23 03:40 – Updated: 2024-08-04 16:25
VLAI
Summary
An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1903296 | x_refsource_MISC |
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CVE-2017-2910 (GCVE-0-2017-2910)
Vulnerability from nvd – Published: 2020-12-02 17:26 – Updated: 2024-08-05 14:09
VLAI
Summary
An exploitable Out-of-bounds Write vulnerability exists in the xls_addCell function of libxls 2.0. A specially crafted xls file can cause a memory corruption resulting in remote code execution. An attacker can send malicious xls file to trigger this vulnerability.
Severity
No CVSS data available.
CWE
- out of bounds write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
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CVE-2018-20452 (GCVE-0-2018-20452)
Vulnerability from nvd – Published: 2018-12-25 17:00 – Updated: 2024-08-05 11:58
VLAI
Summary
The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/evanmiller/libxls/issues/35 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202003-64 | vendor-advisoryx_refsource_GENTOO |
Date Public
2018-12-25 00:00
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CVE-2018-20450 (GCVE-0-2018-20450)
Vulnerability from nvd – Published: 2018-12-25 17:00 – Updated: 2024-08-05 11:58
VLAI
Summary
The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/evanmiller/libxls/issues/34 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202003-64 | vendor-advisoryx_refsource_GENTOO |
Date Public
2018-12-25 00:00
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CVE-2017-12108 (GCVE-0-2017-12108)
Vulnerability from nvd – Published: 2018-04-24 19:00 – Updated: 2024-09-17 00:51
VLAI
Summary
An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULBLANK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.
Severity
8.8 (High)
CWE
- remote code execution
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.talosintelligence.com/vulnerability_r… | x_refsource_MISC |
Impacted products
Date Public
2017-11-15 00:00
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CVE-2017-12109 (GCVE-0-2017-12109)
Vulnerability from nvd – Published: 2018-04-24 19:00 – Updated: 2024-09-16 16:22
VLAI
Summary
An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULRK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.
Severity
8.8 (High)
CWE
- remote code execution
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.talosintelligence.com/vulnerability_r… | x_refsource_MISC |
Impacted products
Date Public
2017-11-15 00:00
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CVE-2026-26824 (GCVE-0-2026-26824)
Vulnerability from cvelistv5 – Published: 2026-06-03 00:00 – Updated: 2026-06-04 12:25
VLAI
Summary
libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
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CVE-2026-26825 (GCVE-0-2026-26825)
Vulnerability from cvelistv5 – Published: 2026-06-03 00:00 – Updated: 2026-06-08 16:41
VLAI
Summary
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialized heap memory originating from the OLE layer (ole2_read). The flaw is detectable with MemorySanitizer (MSAN) and can lead to undefined behavior, incorrect parsing logic, or potential information disclosure.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-908 - Use of Uninitialized Resource
Assigner
References
1 reference
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CVE-2023-38853 (GCVE-0-2023-38853)
Vulnerability from cvelistv5 – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:40
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the xls_parseWorkBook function in xls.c:1015.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38855 (GCVE-0-2023-38855)
Vulnerability from cvelistv5 – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:38
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the get_string function in xlstool.c:395.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38854 (GCVE-0-2023-38854)
Vulnerability from cvelistv5 – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:39
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the transcode_latin1_to_utf8 function in xlstool.c:296.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38852 (GCVE-0-2023-38852)
Vulnerability from cvelistv5 – Published: 2023-08-15 00:00 – Updated: 2025-11-04 22:04
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the unicode_decode_wcstombs function in xlstool.c:266.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
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CVE-2023-38851 (GCVE-0-2023-38851)
Vulnerability from cvelistv5 – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:41
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the xls_parseWorkBook function in xls.c:1018.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2023-38856 (GCVE-0-2023-38856)
Vulnerability from cvelistv5 – Published: 2023-08-15 00:00 – Updated: 2024-10-08 20:37
VLAI
Summary
Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the get_string function in xlstool.c:411.
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
1 reference
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CVE-2021-27836 (GCVE-0-2021-27836)
Vulnerability from cvelistv5 – Published: 2021-11-03 16:07 – Updated: 2024-08-03 21:33
VLAI
Summary
An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, via a crafted XLS file.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libxls/libxls/issues/94 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2020-27819 (GCVE-0-2020-27819)
Vulnerability from cvelistv5 – Published: 2021-02-23 03:40 – Updated: 2024-08-04 16:25
VLAI
Summary
An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1903296 | x_refsource_MISC |
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CVE-2017-2910 (GCVE-0-2017-2910)
Vulnerability from cvelistv5 – Published: 2020-12-02 17:26 – Updated: 2024-08-05 14:09
VLAI
Summary
An exploitable Out-of-bounds Write vulnerability exists in the xls_addCell function of libxls 2.0. A specially crafted xls file can cause a memory corruption resulting in remote code execution. An attacker can send malicious xls file to trigger this vulnerability.
Severity
No CVSS data available.
CWE
- out of bounds write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
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CVE-2018-20452 (GCVE-0-2018-20452)
Vulnerability from cvelistv5 – Published: 2018-12-25 17:00 – Updated: 2024-08-05 11:58
VLAI
Summary
The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/evanmiller/libxls/issues/35 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202003-64 | vendor-advisoryx_refsource_GENTOO |
Date Public
2018-12-25 00:00
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CVE-2018-20450 (GCVE-0-2018-20450)
Vulnerability from cvelistv5 – Published: 2018-12-25 17:00 – Updated: 2024-08-05 11:58
VLAI
Summary
The read_MSAT function in ole.c in libxls 1.4.0 has a double free that allows attackers to cause a denial of service (application crash) via a crafted file, a different vulnerability than CVE-2017-2897.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/evanmiller/libxls/issues/34 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202003-64 | vendor-advisoryx_refsource_GENTOO |
Date Public
2018-12-25 00:00
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CVE-2017-12108 (GCVE-0-2017-12108)
Vulnerability from cvelistv5 – Published: 2018-04-24 19:00 – Updated: 2024-09-17 00:51
VLAI
Summary
An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULBLANK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.
Severity
8.8 (High)
CWE
- remote code execution
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.talosintelligence.com/vulnerability_r… | x_refsource_MISC |
Impacted products
Date Public
2017-11-15 00:00
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CVE-2017-12109 (GCVE-0-2017-12109)
Vulnerability from cvelistv5 – Published: 2018-04-24 19:00 – Updated: 2024-09-16 16:22
VLAI
Summary
An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULRK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.
Severity
8.8 (High)
CWE
- remote code execution
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.talosintelligence.com/vulnerability_r… | x_refsource_MISC |
Impacted products
Date Public
2017-11-15 00:00
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