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Medium 4.8
libexpat through 2.10.0 Out-of-Bounds Read via unknown_toUtf8 and unknown_toUtf16
libexpat through 2.10.0 contains an out-of-bounds read vulnerability in unknown_toUtf8() and unknown_toUtf16() in xmltok.c when handling application-registered unknown encodings. Attackers can supply a document ending in a truncated multibyte sequence so the …
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Medium 5.9
libexpat through 2.9.0 Integer Overflow in storeAtts via attIndex and nPrefixes
libexpat through 2.9.0 contains a signed integer overflow vulnerability in storeAtts() in lib/xmlparse.c that allows attackers to trigger out-of-bounds writes via oversized attribute counts. Attackers can supply a multi-gigabyte document with a start tag carr…
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Medium 5.9
libexpat through 2.9.0 NULL Pointer Dereference via External Entity Subparser
libexpat through 2.9.0 contains a NULL pointer dereference vulnerability in externalEntityInitProcessor2() in lib/xmlparse.c that mishandles the XML_TOK_NONE token from empty input. Attackers who control stream chunking can force an empty non-final first pars…
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Medium 5.9
libexpat 2.7.2 through 2.9.0 Denial of Service via XML_ParserReset
libexpat 2.7.2 through 2.9.0 contains a denial of service vulnerability because XML_ParserReset zeroes the direct byte count but never offsets tracked heap allocations. Attackers can submit a large XML document so later documents on the same reset parser fail…
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Medium 5.9
libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc
libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap …
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Medium 4.9
libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occu…
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Medium 5.9
In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, …
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Medium 6.2
libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same…
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Medium 4.9
libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking…
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Medium 6.9
xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.
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Medium 6.9
xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId.
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Medium 6.5
xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used.
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Medium 6.9
libexpat before 2.8.2 has an integer overflow in copyString.
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Medium 6.9
libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.
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Medium 6.9
libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Pars…
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Medium 6.9
libexpat before 2.8.2 has an integer overflow in getAttributeId.
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Medium 6.9
libexpat before 2.8.2 has an integer overflow in addBinding.
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Medium 6.9
libexpat before 2.8.2 has an integer overflow in storeAtts.
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Medium 6.9
In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing arra…
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Medium 4.9
libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of …
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Medium 4.9
libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_Par…
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Medium 4.0
libexpat before 2.7.5 allows an infinite loop while parsing DTD content.
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Medium 4.0
libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.
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Medium 6.9
In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is n…
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Medium 5.9CVE-2024-50602 Public exploit
An issue was discovered in libexpat before 2.6.4. There is a crash within the XML_ResumeParser function because XML_Sto…
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Medium 5.5
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
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Medium 6.5CVE-2022-25313 Public exploit
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth…
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Medium 6.5
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing to…