CVE-2026-1521

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Source
https://cve.org/CVERecord?id=CVE-2026-1521
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1521.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-1521
Published
2026-01-28T15:16:17.493Z
Modified
2026-03-14T15:05:42.071540Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A security flaw has been discovered in Open5GS up to 2.7.6. This affects the function sgwcs5chandlebearerresourcefailureindication of the file src/sgwc/s5c-handler.c of the component SGWC. Performing a manipulation results in denial of service. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The patch is named 69b53add90a9479d7960b822fc60601d659c328b. It is recommended to apply a patch to fix this issue.

References

Affected packages

Git / github.com/open5gs/open5gs

Affected ranges

Type
GIT
Repo
https://github.com/open5gs/open5gs
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
d9d3abdd480be96fac3bc8a997e83446648763ca
Fixed
69b53add90a9479d7960b822fc60601d659c328b
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.7.6"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.2.0
v0.3.0
v0.3.1
v0.3.10
v0.3.11
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v0.5.1
v0.5.2
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.3.0
v2.*
v2.0.0
v2.0.18
v2.0.22
v2.1.0
v2.1.1
v2.1.3
v2.1.4
v2.1.5
v2.1.7
v2.2.0
v2.2.1
v2.2.6
v2.2.7
v2.2.8
v2.2.9
v2.3.0
v2.3.1
v2.3.2
v2.3.6
v2.4.0
v2.4.1
v2.4.3
v2.4.4
v2.4.5
v2.4.7
v2.4.8
v2.4.9
v2.6.1
v2.6.2
v2.6.3
v2.6.4
v2.6.6
v2.7.0
v2.7.1
v2.7.2
v2.7.5
v2.7.6

Database specific

vanir_signatures 
[
    {
        "signature_type": "Function",
        "deprecated": false,
        "id": "CVE-2026-1521-0fa0087d",
        "target": {
            "file": "src/sgwc/s5c-handler.c",
            "function": "sgwc_s5c_handle_delete_session_response"
        },
        "digest": {
            "length": 1655.0,
            "function_hash": "15508307772982429633011957499214041995"
        },
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b"
    },
    {
        "signature_type": "Line",
        "deprecated": false,
        "id": "CVE-2026-1521-12e268d6",
        "target": {
            "file": "src/sgwc/s5c-handler.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "25812427068751860969159990134597307978",
                "7222066163203399397211561522002353510",
                "96942117271000208749064346855104249832",
                "113382261343527669094962999287356753941",
                "25812427068751860969159990134597307978",
                "7222066163203399397211561522002353510",
                "96942117271000208749064346855104249832",
                "135513109587151866415305291539791363890",
                "25812427068751860969159990134597307978",
                "7222066163203399397211561522002353510",
                "96942117271000208749064346855104249832",
                "113382261343527669094962999287356753941",
                "179342029530937546220693424464317231887",
                "168270296695758502613696484442644910245",
                "151740391447207286781117636294302217573",
                "179685029504330156438529145634502608597",
                "298857582282049929916713191002565277261",
                "130585704969285285511167422994750579028",
                "244750286989761738896379403658891274619",
                "33275739632645840872134927330672984445"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "id": "CVE-2026-1521-4b3d43ed",
        "target": {
            "file": "src/sgwc/s5c-handler.c",
            "function": "sgwc_s5c_handle_create_session_response"
        },
        "digest": {
            "length": 6447.0,
            "function_hash": "248441703319746844892426604258065214562"
        },
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "id": "CVE-2026-1521-91a83e2a",
        "target": {
            "file": "src/sgwc/s5c-handler.c",
            "function": "sgwc_s5c_handle_bearer_resource_failure_indication"
        },
        "digest": {
            "length": 852.0,
            "function_hash": "177637928081034831759304430883841790241"
        },
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "id": "CVE-2026-1521-a3e407f0",
        "target": {
            "file": "src/sgwc/s5c-handler.c",
            "function": "sgwc_s5c_handle_modify_bearer_response"
        },
        "digest": {
            "length": 3381.0,
            "function_hash": "191995944558783431321902945343140142373"
        },
        "signature_version": "v1",
        "source": "https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1521.json"