CVE-2026-86274 (GCVE-0-2026-86274)
Vulnerability from cvelistv5 – Published: 2026-09-07 05:15 – Updated: 2026-09-07 05:15
VLAI
EPSS
VEX
Title
projeto-siga Authentication Flow ExAutenticacaoController.java ExAutenticacaoController.autenticar authorization
Summary
A security vulnerability has been detected in projeto-siga siga up to 11.0.2.10/11.0.2.13/11.1.1. This affects the function ExAutenticacaoController.autenticar of the file sigaex/src/main/java/br/gov/jfrj/siga/vraptor/ExAutenticacaoController.java of the component Authentication Flow. Such manipulation of the argument cod/jwt leads to missing authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/399435 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/399435/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-86274 | third-party-advisory |
| https://vuldb.com/submit/904871 | third-party-advisory |
| https://github.com/projeto-siga/siga/issues/2493 | exploitissue-tracking |
| https://github.com/projeto-siga/siga/ | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| projeto-siga | siga |
Affected:
11.0.2.0
Affected: 11.0.2.1 Affected: 11.0.2.2 Affected: 11.0.2.3 Affected: 11.0.2.4 Affected: 11.0.2.5 Affected: 11.0.2.6 Affected: 11.0.2.7 Affected: 11.0.2.8 Affected: 11.0.2.9 Affected: 11.0.2.10 Affected: 11.0.2.11 Affected: 11.0.2.12 Affected: 11.0.2.13 Affected: 11.1.0 Affected: 11.1.1 cpe:2.3:a:projeto-siga:siga:*:*:*:*:*:*:*:* |
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:projeto-siga:siga:*:*:*:*:*:*:*:*"
],
"modules": [
"Authentication Flow"
],
"product": "siga",
"vendor": "projeto-siga",
"versions": [
{
"status": "affected",
"version": "11.0.2.0"
},
{
"status": "affected",
"version": "11.0.2.1"
},
{
"status": "affected",
"version": "11.0.2.2"
},
{
"status": "affected",
"version": "11.0.2.3"
},
{
"status": "affected",
"version": "11.0.2.4"
},
{
"status": "affected",
"version": "11.0.2.5"
},
{
"status": "affected",
"version": "11.0.2.6"
},
{
"status": "affected",
"version": "11.0.2.7"
},
{
"status": "affected",
"version": "11.0.2.8"
},
{
"status": "affected",
"version": "11.0.2.9"
},
{
"status": "affected",
"version": "11.0.2.10"
},
{
"status": "affected",
"version": "11.0.2.11"
},
{
"status": "affected",
"version": "11.0.2.12"
},
{
"status": "affected",
"version": "11.0.2.13"
},
{
"status": "affected",
"version": "11.1.0"
},
{
"status": "affected",
"version": "11.1.1"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "volksec (VulDB User)"
},
{
"lang": "en",
"type": "coordinator",
"value": "VulDB CNA Team"
}
],
"descriptions": [
{
"lang": "en",
"value": "A security vulnerability has been detected in projeto-siga siga up to 11.0.2.10/11.0.2.13/11.1.1. This affects the function ExAutenticacaoController.autenticar of the file sigaex/src/main/java/br/gov/jfrj/siga/vraptor/ExAutenticacaoController.java of the component Authentication Flow. Such manipulation of the argument cod/jwt leads to missing authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet."
}
],
"metrics": [
{
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R",
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"cvssV2_0": {
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],
"problemTypes": [
{
"descriptions": [
{
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"description": "Missing Authorization",
"lang": "en",
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}
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},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "Incorrect Authorization",
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"providerMetadata": {
"dateUpdated": "2026-09-07T05:15:11.895Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-399435 | projeto-siga Authentication Flow ExAutenticacaoController.java ExAutenticacaoController.autenticar authorization",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/399435"
},
{
"name": "VDB-399435 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/399435/cti"
},
{
"name": "CVE-2026-86274 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/cve/CVE-2026-86274"
},
{
"name": "Submit #904871 | projeto-siga siga 11.0.2.10 through 11.1.1 authorization bypass",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/904871"
},
{
"tags": [
"exploit",
"issue-tracking"
],
"url": "https://github.com/projeto-siga/siga/issues/2493"
},
{
"tags": [
"product"
],
"url": "https://github.com/projeto-siga/siga/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-06T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-09-06T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-06T15:21:25.000Z",
"value": "VulDB entry last update"
}
],
"title": "projeto-siga Authentication Flow ExAutenticacaoController.java ExAutenticacaoController.autenticar authorization",
"x_generator": [
"VulDB PVTS v202609"
]
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-86274",
"datePublished": "2026-09-07T05:15:11.895Z",
"dateReserved": "2026-09-06T13:16:19.380Z",
"dateUpdated": "2026-09-07T05:15:11.895Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-86274",
"date": "2026-09-07",
"epss": "0.00429",
"percentile": "0.35996"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-86274\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-09-07T06:17:23.820\",\"lastModified\":\"2026-09-07T06:17:23.820\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A security vulnerability has been detected in projeto-siga siga up to 11.0.2.10/11.0.2.13/11.1.1. This affects the function ExAutenticacaoController.autenticar of the file sigaex/src/main/java/br/gov/jfrj/siga/vraptor/ExAutenticacaoController.java of the component Authentication Flow. Such manipulation of the argument cod/jwt leads to missing authorization. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"}],\"affected\":[{\"source\":\"cna@vuldb.com\",\"affectedData\":[{\"vendor\":\"projeto-siga\",\"product\":\"siga\",\"cpes\":[\"cpe:2.3:a:projeto-siga:siga:*:*:*:*:*:*:*:*\"],\"modules\":[\"Authentication Flow\"],\"versions\":[{\"version\":\"11.0.2.0\",\"status\":\"affected\"},{\"version\":\"11.0.2.1\",\"status\":\"affected\"},{\"version\":\"11.0.2.2\",\"status\":\"affected\"},{\"version\":\"11.0.2.3\",\"status\":\"affected\"},{\"version\":\"11.0.2.4\",\"status\":\"affected\"},{\"version\":\"11.0.2.5\",\"status\":\"affected\"},{\"version\":\"11.0.2.6\",\"status\":\"affected\"},{\"version\":\"11.0.2.7\",\"status\":\"affected\"},{\"version\":\"11.0.2.8\",\"status\":\"affected\"},{\"version\":\"11.0.2.9\",\"status\":\"affected\"},{\"version\":\"11.0.2.10\",\"status\":\"affected\"},{\"version\":\"11.0.2.11\",\"status\":\"affected\"},{\"version\":\"11.0.2.12\",\"status\":\"affected\"},{\"version\":\"11.0.2.13\",\"status\":\"affected\"},{\"version\":\"11.1.0\",\"status\":\"affected\"},{\"version\":\"11.1.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"NONE\",\"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\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"},{\"lang\":\"en\",\"value\":\"CWE-863\"}]}],\"references\":[{\"url\":\"https://github.com/projeto-siga/siga/\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/projeto-siga/siga/issues/2493\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/cve/CVE-2026-86274\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/904871\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/399435\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/399435/cti\",\"source\":\"cna@vuldb.com\"}]}}"
}
}
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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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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