CVE-2026-55547

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Source
https://cve.org/CVERecord?id=CVE-2026-55547
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55547.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55547
Aliases
Published
2026-08-28T17:11:34.332Z
Modified
2026-08-30T08:17:22.266720Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Yamcs: Missing Authorization on Role and Privilege Enumeration Endpoints Allows Any Authenticated User to Disclose Full Security Configuration
Details

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits SystemPrivilege.ControlAccess checks from IamApi.listRoles, IamApi.getRole, and IamApi.listPrivileges in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java. Any authenticated account can call GET /api/roles, GET /api/roles/{name}, and GET /api/privileges to enumerate available system privileges and configured role mappings. The disclosure reveals security configuration that can support targeted privilege-escalation attempts. This issue is fixed in versions 5.12.8 and 5.13.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-285",
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55547.json"
}
References

Affected packages

Git / github.com/yamcs/yamcs

Affected ranges

Type
GIT
Repo
https://github.com/yamcs/yamcs
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Introduced
8bf5af6fe227bbf8ead15e60644b7ddbf345d623
Fixed
144335f15d7730d7fc833122c8c8a6f1906fea9f
Fixed
50d73a44d136f0dd2828fa11f69f1fe1fc5583f7
Fixed
c2aec1c242e656e48b52c7f87deea88183bb592d
Fixed
dcaec5f0b2f4231b8e313e94d79a937169c9e0ba
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.12.8"
        },
        {
            "introduced": "5.13.0"
        },
        {
            "fixed": "5.13.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

Other
before-removing-cfdp-half-implemented-features
v0.*
v0.26.0
v0.26.1
v0.28.0
v0.28.0-20150811
v0.28.0-20150817
v0.28.0-20150820
v0.28.0-20150824
v0.28.0-20150825
v0.28.0-20150826
v0.28.0-20150827
v0.28.0-20150828
v0.28.0-20150901
v0.28.0-20150902
v0.28.0-20150902-2
v0.28.0-20150903
v0.29.0
v0.29.1
v0.29.1-20151214
v0.29.1-20160119
v0.29.1-20160127
v0.29.3
v0.29.3-20160608
v0.29.4
yamcs-0.*
yamcs-0.30.0
yamcs-3.*
yamcs-3.0.0
yamcs-3.1.0
yamcs-3.1.1
yamcs-3.1.2
yamcs-3.2.0
yamcs-3.2.1
yamcs-3.2.2
yamcs-3.3.0
yamcs-3.4.0
yamcs-4.*
yamcs-4.0.1
yamcs-4.1.1
yamcs-4.1.2
yamcs-4.10.0
yamcs-4.10.1
yamcs-4.10.2
yamcs-4.10.3
yamcs-4.10.4
yamcs-4.10.5
yamcs-4.10.6
yamcs-4.10.7
yamcs-4.10.8
yamcs-4.10.9
yamcs-4.2.0
yamcs-4.2.1
yamcs-4.2.2
yamcs-4.3.0
yamcs-4.3.1
yamcs-4.4.0
yamcs-4.4.1
yamcs-4.4.2
yamcs-4.7
yamcs-4.7.1
yamcs-4.7.2
yamcs-4.7.3
yamcs-4.8.0
yamcs-4.8.1
yamcs-4.9.0
yamcs-4.9.1
yamcs-4.9.2
yamcs-4.9.3
yamcs-4.9.4
yamcs-4.9.5
yamcs-5.*
yamcs-5.0.0
yamcs-5.0.1
yamcs-5.1.0
yamcs-5.1.1
yamcs-5.1.2
yamcs-5.1.3
yamcs-5.10.0
yamcs-5.10.1
yamcs-5.10.2
yamcs-5.10.3
yamcs-5.10.4
yamcs-5.10.5
yamcs-5.10.6
yamcs-5.10.7
yamcs-5.10.8
yamcs-5.10.9
yamcs-5.11.0
yamcs-5.11.1
yamcs-5.11.2
yamcs-5.11.3
yamcs-5.11.4
yamcs-5.11.5
yamcs-5.11.6
yamcs-5.11.7
yamcs-5.12.0
yamcs-5.12.1
yamcs-5.12.2
yamcs-5.12.3
yamcs-5.12.4
yamcs-5.12.5
yamcs-5.12.6
yamcs-5.12.7
yamcs-5.13.0
yamcs-5.13.1
yamcs-5.2.0
yamcs-5.3.0
yamcs-5.3.1
yamcs-5.3.2
yamcs-5.3.3
yamcs-5.3.4
yamcs-5.3.5
yamcs-5.4.0
yamcs-5.4.1
yamcs-5.4.2
yamcs-5.4.3
yamcs-5.5.0
yamcs-5.5.1
yamcs-5.5.2
yamcs-5.5.3
yamcs-5.5.4
yamcs-5.5.5
yamcs-5.5.6
yamcs-5.5.7
yamcs-5.6.0
yamcs-5.6.1
yamcs-5.6.2
yamcs-5.7.0
yamcs-5.7.1
yamcs-5.7.10
yamcs-5.7.2
yamcs-5.7.3
yamcs-5.7.4
yamcs-5.7.5
yamcs-5.7.6
yamcs-5.7.7
yamcs-5.7.8
yamcs-5.7.9
yamcs-5.8.0
yamcs-5.8.1
yamcs-5.8.2
yamcs-5.8.3
yamcs-5.8.4
yamcs-5.8.5
yamcs-5.8.6
yamcs-5.8.7
yamcs-5.8.8
yamcs-5.9.0
yamcs-5.9.1
yamcs-5.9.2
yamcs-5.9.3
yamcs-5.9.4
yamcs-5.9.5
yamcs-5.9.6
yamcs-5.9.7
yamcs-5.9.8

Database specific

vanir_signatures_modified 
"2026-08-30T08:17:22Z"
vanir_signatures 
[
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "232282968932972800082801096580240434953",
                "60576927984923567418537545231673021881",
                "313228899616222788019753108077313380620",
                "162068205316453730483629819051453057470",
                "57298432122150906857088488454467174094",
                "156578492344758777228167695537068589609",
                "162713685907445426641105130311474415478",
                "205168343961565118737753196865659668148",
                "58394147200045413990253589515562518558",
                "127834260758273104020509062975772566271",
                "210588733322963582918168887606948468430",
                "334365059468288634214301424057953675264"
            ]
        },
        "id": "CVE-2026-55547-27412437",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java"
        },
        "signature_type": "Line",
        "source": "https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba",
        "signature_version": "v1"
    },
    {
        "digest": {
            "function_hash": "91827562747284810027265939865502572718",
            "length": 442.0
        },
        "id": "CVE-2026-55547-276245f6",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java",
            "function": "listRoles"
        },
        "signature_type": "Function",
        "source": "https://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d",
        "signature_version": "v1"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "232282968932972800082801096580240434953",
                "60576927984923567418537545231673021881",
                "313228899616222788019753108077313380620",
                "162068205316453730483629819051453057470",
                "57298432122150906857088488454467174094",
                "156578492344758777228167695537068589609",
                "162713685907445426641105130311474415478",
                "205168343961565118737753196865659668148",
                "58394147200045413990253589515562518558",
                "127834260758273104020509062975772566271",
                "210588733322963582918168887606948468430",
                "334365059468288634214301424057953675264"
            ]
        },
        "id": "CVE-2026-55547-5d505099",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java"
        },
        "signature_type": "Line",
        "source": "https://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d",
        "signature_version": "v1"
    },
    {
        "digest": {
            "function_hash": "91827562747284810027265939865502572718",
            "length": 442.0
        },
        "id": "CVE-2026-55547-74845378",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java",
            "function": "listRoles"
        },
        "signature_type": "Function",
        "source": "https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba",
        "signature_version": "v1"
    },
    {
        "digest": {
            "function_hash": "112912337208757656177302865749711850730",
            "length": 448.0
        },
        "id": "CVE-2026-55547-ad529d88",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java",
            "function": "listPrivileges"
        },
        "signature_type": "Function",
        "source": "https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba",
        "signature_version": "v1"
    },
    {
        "digest": {
            "function_hash": "60789901153974040388261834528088538739",
            "length": 275.0
        },
        "id": "CVE-2026-55547-af90173d",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java",
            "function": "getRole"
        },
        "signature_type": "Function",
        "source": "https://github.com/yamcs/yamcs/commit/dcaec5f0b2f4231b8e313e94d79a937169c9e0ba",
        "signature_version": "v1"
    },
    {
        "digest": {
            "function_hash": "60789901153974040388261834528088538739",
            "length": 275.0
        },
        "id": "CVE-2026-55547-b685f637",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java",
            "function": "getRole"
        },
        "signature_type": "Function",
        "source": "https://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d",
        "signature_version": "v1"
    },
    {
        "digest": {
            "function_hash": "112912337208757656177302865749711850730",
            "length": 448.0
        },
        "id": "CVE-2026-55547-fb3378d5",
        "deprecated": false,
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java",
            "function": "listPrivileges"
        },
        "signature_type": "Function",
        "source": "https://github.com/yamcs/yamcs/commit/c2aec1c242e656e48b52c7f87deea88183bb592d",
        "signature_version": "v1"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55547.json"