CVE-2026-6841 (GCVE-0-2026-6841)
Vulnerability from cvelistv5 – Published: 2026-05-21 11:49 – Updated: 2026-05-21 12:45 X_Open Source
VLAI
Title
Reflected XSS in Request Tracker
Summary
Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the "Page" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim’s browser.
This vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to 6.0.2.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/05/CVE-2026-6841 | third-party-advisory |
| https://requesttracker.com/request-tracker/ | product |
| https://docs.bestpractical.com/release-notes/rt/5.0.10 | release-notes |
| https://docs.bestpractical.com/release-notes/rt/6.0.3 | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Best Practical | Request Tracker |
Affected:
5.0.4 , < 5.0.10
(semver)
Affected: 6.0.0 , < 6.0.3 (semver) |
Date Public
2026-05-21 10:38
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-6841",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-21T12:42:30.866693Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-21T12:45:14.647Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Request Tracker",
"repo": "https://github.com/bestpractical/rt",
"vendor": "Best Practical",
"versions": [
{
"lessThan": "5.0.10",
"status": "affected",
"version": "5.0.4",
"versionType": "semver"
},
{
"lessThan": "6.0.3",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Aleksander Iwicki (CERT Polska)"
}
],
"datePublic": "2026-05-21T10:38:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the \"Page\" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim\u2019s browser.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(252, 252, 252);\"\u003eThis vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to\u0026nbsp;6.0.2.\u003c/span\u003e\u003cbr\u003e"
}
],
"value": "Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the \"Page\" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim\u2019s browser.\n\nThis vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to\u00a06.0.2."
}
],
"impacts": [
{
"capecId": "CAPEC-591",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-591 Reflected XSS"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-21T11:49:07.533Z",
"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"shortName": "CERT-PL"
},
"references": [
{
"tags": [
"third-party-advisory"
],
"url": "https://cert.pl/en/posts/2026/05/CVE-2026-6841"
},
{
"tags": [
"product"
],
"url": "https://requesttracker.com/request-tracker/"
},
{
"tags": [
"release-notes"
],
"url": "https://docs.bestpractical.com/release-notes/rt/5.0.10"
},
{
"tags": [
"release-notes"
],
"url": "https://docs.bestpractical.com/release-notes/rt/6.0.3"
}
],
"source": {
"discovery": "INTERNAL"
},
"tags": [
"x_open-source"
],
"title": "Reflected XSS in Request Tracker",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"assignerShortName": "CERT-PL",
"cveId": "CVE-2026-6841",
"datePublished": "2026-05-21T11:49:07.533Z",
"dateReserved": "2026-04-22T07:09:40.481Z",
"dateUpdated": "2026-05-21T12:45:14.647Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-6841",
"date": "2026-06-09",
"epss": "0.00038",
"percentile": "0.11737"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-6841\",\"sourceIdentifier\":\"cvd@cert.pl\",\"published\":\"2026-05-21T13:16:20.273\",\"lastModified\":\"2026-06-01T14:02:21.180\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the \\\"Page\\\" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim\u2019s browser.\\n\\nThis vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to\u00a06.0.2.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cvd@cert.pl\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":5.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"ACTIVE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"LOW\",\"subIntegrityImpact\":\"LOW\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"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\"}}],\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7}]},\"weaknesses\":[{\"source\":\"cvd@cert.pl\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.0.4\",\"versionEndExcluding\":\"5.0.10\",\"matchCriteriaId\":\"B391CF4D-CACE-4C0D-8717-2D3E73AFF79C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0.0\",\"versionEndExcluding\":\"6.0.3\",\"matchCriteriaId\":\"C106711D-0178-4681-BA2F-081792A36275\"}]}]}],\"references\":[{\"url\":\"https://cert.pl/en/posts/2026/05/CVE-2026-6841\",\"source\":\"cvd@cert.pl\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://docs.bestpractical.com/release-notes/rt/5.0.10\",\"source\":\"cvd@cert.pl\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://docs.bestpractical.com/release-notes/rt/6.0.3\",\"source\":\"cvd@cert.pl\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://requesttracker.com/request-tracker/\",\"source\":\"cvd@cert.pl\",\"tags\":[\"Product\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-6841\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-21T12:42:30.866693Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-21T12:45:10.308Z\"}}], \"cna\": {\"tags\": [\"x_open-source\"], \"title\": \"Reflected XSS in Request Tracker\", \"source\": {\"discovery\": \"INTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Aleksander Iwicki (CERT Polska)\"}], \"impacts\": [{\"capecId\": \"CAPEC-591\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-591 Reflected XSS\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 5.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"ACTIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"LOW\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/bestpractical/rt\", \"vendor\": \"Best Practical\", \"product\": \"Request Tracker\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.0.4\", \"lessThan\": \"5.0.10\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.0.0\", \"lessThan\": \"6.0.3\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-05-21T10:38:00.000Z\", \"references\": [{\"url\": \"https://cert.pl/en/posts/2026/05/CVE-2026-6841\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://requesttracker.com/request-tracker/\", \"tags\": [\"product\"]}, {\"url\": \"https://docs.bestpractical.com/release-notes/rt/5.0.10\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://docs.bestpractical.com/release-notes/rt/6.0.3\", \"tags\": [\"release-notes\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the \\\"Page\\\" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim\\u2019s browser.\\n\\nThis vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to\\u00a06.0.2.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Request Tracker is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the \\\"Page\\\" parameter in GET requests. An attacker can craft a URL that, when opened, results in arbitrary JavaScript execution in the victim\\u2019s browser.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\\\"background-color: rgb(252, 252, 252);\\\"\u003eThis vulnerability affects versions from 5.0.4 up to 5.0.9 and from 6.0.0 up to\u0026nbsp;6.0.2.\u003c/span\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6\", \"shortName\": \"CERT-PL\", \"dateUpdated\": \"2026-05-21T11:49:07.533Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-6841\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-21T12:45:14.647Z\", \"dateReserved\": \"2026-04-22T07:09:40.481Z\", \"assignerOrgId\": \"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6\", \"datePublished\": \"2026-05-21T11:49:07.533Z\", \"assignerShortName\": \"CERT-PL\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…