CVE-2026-55552

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Source
https://cve.org/CVERecord?id=CVE-2026-55552
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55552.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55552
Aliases
Published
2026-08-28T17:18:45Z
Modified
2026-09-10T08:13:52Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Yamcs: Unauthenticated Directory Traversal
Details

Yamcs is a mission control framework. Prior to 5.11.13, Yamcs StaticFileHandler.locateFile resolves an unauthenticated request path without using Path.normalize and Path.toAbsolutePath to confirm that the absolute path remains within the configured staticRoots. A path containing traversal segments can escape the intended web root and return an arbitrary readable host file. The flaw is in yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java and can disclose sensitive operating-system and application data. This issue is fixed in version 5.11.13, and the 5.12 line is fixed from version 5.12.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55552.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
Fixed
c7dfd24e469ae1086c23e0fe04401cb1ce4260d4
Fixed
f4bc588880c166849e983aa8f65b9c8107d06091
Fixed
f2f505ac4a9b4a8df80ac7ebe911f534eea99817
Fixed
b6a0f04a4eb3a7af870d4d25422c33ffa870d3fb
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.12.0"
        }
    ],
    "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-5.11.10
yamcs-5.11.11
yamcs-5.11.12
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-5.11.8
yamcs-5.11.9
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

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55552.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "44504692117066412768290651635835148044",
            "length": 215
        },
        "id": "CVE-2026-55552-1f0655df",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/yamcs/yamcs/commit/c7dfd24e469ae1086c23e0fe04401cb1ce4260d4",
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java",
            "function": "locateFile"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "16253511461268113387516735528024691093",
                "47131856729885217536715101966680264240",
                "171909562685036065406765662656734654716",
                "91861956314216692429366799229084964277",
                "114224942825567201968517520567871342932",
                "144368280349882285538415378672116534088",
                "113835219182165317994577325558448021397",
                "177650712664092153388428630558971960364"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-55552-2bff5b21",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/yamcs/yamcs/commit/f4bc588880c166849e983aa8f65b9c8107d06091",
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "44504692117066412768290651635835148044",
            "length": 215
        },
        "id": "CVE-2026-55552-4bd56d9b",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/yamcs/yamcs/commit/f4bc588880c166849e983aa8f65b9c8107d06091",
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java",
            "function": "locateFile"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "16253511461268113387516735528024691093",
                "47131856729885217536715101966680264240",
                "171909562685036065406765662656734654716",
                "91861956314216692429366799229084964277",
                "114224942825567201968517520567871342932",
                "144368280349882285538415378672116534088",
                "113835219182165317994577325558448021397",
                "177650712664092153388428630558971960364"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-55552-b03602dd",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/yamcs/yamcs/commit/c7dfd24e469ae1086c23e0fe04401cb1ce4260d4",
        "target": {
            "file": "yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java"
        }
    }
]
vanir_signatures_modified 
"2026-09-10T08:13:52Z"