611 matches found
CVE-2026-59933 PhpSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the OLE reader follows sector chains from attacker-controlled XLS/OLE...
CVE-2026-59933 PhpSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the OLE reader follows sector chains from attacker-controlled XLS/OLE...
PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
Summary PhpSpreadsheet's OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-block depot sector chain to point back to itself. During normal XLS detection,...
CVE-2026-41034
ONLYOFFICE DocumentServer before 9.3.0 has an untrusted pointer dereference in XLS processing/conversion via pictFmla.cbBufInCtlStm and other vectors, leading to an information leak and ASLR bypass...
Linux Distros Unpatched Vulnerability : CVE-2026-26825
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggere...
CVE-2026-26825
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...
CVE-2026-26824
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 readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...
DEBIAN-CVE-2026-26824
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 readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...
UBUNTU-CVE-2026-26825
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...
CVE-2026-26824
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 readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...
CVE-2026-26824
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 readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...
CVE-2026-26825
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...
EUVD-2026-34179
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...
CVE-2026-26825
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...
CVE-2026-26825
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...
PT-2026-46057
Name of the Vulnerable Software and Affected Versions libxls versions prior to 1.6.4 Description The OLE container parser contains an issue where memory allocated for the Master Sector Allocation Table MSAT in the read MSAT function is not fully initialized before being used by the ole2 validate...
CVE-2026-26825
Libxls 1.6.3 contains a use-of-uninitialized memory vulnerability when parsing malformed XLS files. The issue is triggered by uninitialized heap memory originating from the OLE layer (ole2_read) and is reachable via xls_parseWorkBook(). MemorySanitizer can detect it; the advisory notes undefined ...
EUVD-2026-23199
ONLYOFFICE DocumentServer before 9.3.0 has an untrusted pointer dereference in XLS processing/conversion via pictFmla.cbBufInCtlStm and other vectors, leading to an information leak and ASLR bypass...
CVE-2026-41034
ONLYOFFICE DocumentServer prior to 9.3.0 contains an untrusted pointer dereference in XLS processing/conversion (via pictFmla.cbBufInCtlStm and related vectors), causing information leakage and an ASLR bypass. Affected product: ONLYOFFICE DocumentServer. Root cause: untrusted pointer dereference ...