CVE-2026-42267 (GCVE-0-2026-42267)
Vulnerability from cvelistv5
Published
2026-05-08 03:28
Modified
2026-05-08 12:58
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1236 - Improper Neutralization of Formula Elements in a CSV File
Summary
Kimai is an open-source time tracking application. From version 2.27.0 to before version 2.54.0, any ROLE_USER can create a tag with a formula string as its name (e.g. =SUM(54+51)) via POST /api/tags and assign it to a timesheet. When an admin exports timesheets to XLSX, ArrayFormatter.formatValue() joins tag names with implode() and returns the result unchanged. OpenSpout promotes any =-prefixed string to a FormulaCell, writing <f>SUM(54+51)</f> into the XLSX archive. Excel evaluates the formula when the file is opened. This issue has been patched in version 2.54.0.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-42267",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-08T12:57:49.978866Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-08T12:58:12.770Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/kimai/kimai/security/advisories/GHSA-3xc2-h5r3-wv3r"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "kimai",
"vendor": "kimai",
"versions": [
{
"status": "affected",
"version": "\u003e= 2.27.0, \u003c 2.54.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Kimai is an open-source time tracking application. From version 2.27.0 to before version 2.54.0, any ROLE_USER can create a tag with a formula string as its name (e.g. =SUM(54+51)) via POST /api/tags and assign it to a timesheet. When an admin exports timesheets to XLSX, ArrayFormatter.formatValue() joins tag names with implode() and returns the result unchanged. OpenSpout promotes any =-prefixed string to a FormulaCell, writing \u003cf\u003eSUM(54+51)\u003c/f\u003e into the XLSX archive. Excel evaluates the formula when the file is opened. This issue has been patched in version 2.54.0."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1236",
"description": "CWE-1236: Improper Neutralization of Formula Elements in a CSV File",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-08T03:28:52.226Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/kimai/kimai/security/advisories/GHSA-3xc2-h5r3-wv3r",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/kimai/kimai/security/advisories/GHSA-3xc2-h5r3-wv3r"
},
{
"name": "https://github.com/kimai/kimai/releases/tag/2.54.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/kimai/kimai/releases/tag/2.54.0"
}
],
"source": {
"advisory": "GHSA-3xc2-h5r3-wv3r",
"discovery": "UNKNOWN"
},
"title": "Kimai: Formula Injection via tag names in XLSX export"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-42267",
"datePublished": "2026-05-08T03:28:52.226Z",
"dateReserved": "2026-04-26T11:53:27.706Z",
"dateUpdated": "2026-05-08T12:58:12.770Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-42267\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-08T12:57:49.978866Z\"}}}], \"references\": [{\"url\": \"https://github.com/kimai/kimai/security/advisories/GHSA-3xc2-h5r3-wv3r\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-08T12:58:07.671Z\"}}], \"cna\": {\"title\": \"Kimai: Formula Injection via tag names in XLSX export\", \"source\": {\"advisory\": \"GHSA-3xc2-h5r3-wv3r\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P\", \"userInteraction\": \"ACTIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"kimai\", \"product\": \"kimai\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 2.27.0, \u003c 2.54.0\"}]}], \"references\": [{\"url\": \"https://github.com/kimai/kimai/security/advisories/GHSA-3xc2-h5r3-wv3r\", \"name\": \"https://github.com/kimai/kimai/security/advisories/GHSA-3xc2-h5r3-wv3r\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/kimai/kimai/releases/tag/2.54.0\", \"name\": \"https://github.com/kimai/kimai/releases/tag/2.54.0\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Kimai is an open-source time tracking application. From version 2.27.0 to before version 2.54.0, any ROLE_USER can create a tag with a formula string as its name (e.g. =SUM(54+51)) via POST /api/tags and assign it to a timesheet. When an admin exports timesheets to XLSX, ArrayFormatter.formatValue() joins tag names with implode() and returns the result unchanged. OpenSpout promotes any =-prefixed string to a FormulaCell, writing \u003cf\u003eSUM(54+51)\u003c/f\u003e into the XLSX archive. Excel evaluates the formula when the file is opened. This issue has been patched in version 2.54.0.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1236\", \"description\": \"CWE-1236: Improper Neutralization of Formula Elements in a CSV File\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-05-08T03:28:52.226Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-42267\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-08T12:58:12.770Z\", \"dateReserved\": \"2026-04-26T11:53:27.706Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-05-08T03:28:52.226Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…