CVE-2026-8357
Full vulnerability record from the local CVENow database.
Description
LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.
Severity
MEDIUM
CVSS score
5.4
(v4.0)
Vulnerability status
Deferred
Source identifier
Published
2026-06-15 18:16:37.513000
Last modified
2026-10-25 23:10:00.167000
View original CVE JSON
{
"id": "CVE-2026-8357",
"sourceIdentifier": "[email protected]",
"published": "2026-06-15T18:16:37.513",
"lastModified": "2026-10-25T23:10:00.167",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting."
},
{
"lang": "es",
"value": "LibreOffice Calc compila las fórmulas de celda al abrir una hoja de cálculo. Existía un desbordamiento de búfer de montón al compilar una fórmula muy larga compuesta por muchos tokens de apertura. El array que rastrea la profundidad de anidamiento fue asignado con un elemento demasiado pequeño para ese peor caso, por lo que dicha fórmula escribió un elemento más allá de su final. En versiones corregidas, el array se dimensiona para contener el anidamiento más grande posible."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "The Document Foundation",
"product": "LibreOffice",
"defaultStatus": "unknown",
"versions": [
{
"version": "26.2",
"lessThan": "< 26.2.4",
"versionType": "26.2 series",
"status": "affected"
}
]
}
]
},
{
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"metrics": {
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{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "PROOF_OF_CONCEPT",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
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"scope": "UNCHANGED",
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"availabilityImpact": "HIGH"
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"description": [
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"value": "CWE-193"
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}