CVE-2026-44325 (GCVE-0-2026-44325)
Vulnerability from cvelistv5
Published
2026-05-27 15:43
Modified
2026-05-27 17:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/api_accesstoken.go reflects over models.NrfAccessTokenAccessTokenReq, special-cases only plain string and NrfNfManagementNfType fields, and treats every other field as if it were a single models.PlmnId. The parsed *models.PlmnId is then assigned with reflect.Value.Set() to whichever field name the attacker put in the form body, which panics whenever the destination field's real type is incompatible (slice, different struct, primitive). Gin recovery converts each panic into HTTP 500, but the endpoint remains remotely panicable from a single unauthenticated form-encoded request and is repeatedly triggerable. This vulnerability is fixed in 4.2.2.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-44325",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-27T17:50:19.740036Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T17:50:51.669Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "free5gc",
"vendor": "free5gc",
"versions": [
{
"status": "affected",
"version": "\u003c 4.2.2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC\u0027s NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/api_accesstoken.go reflects over models.NrfAccessTokenAccessTokenReq, special-cases only plain string and NrfNfManagementNfType fields, and treats every other field as if it were a single models.PlmnId. The parsed *models.PlmnId is then assigned with reflect.Value.Set() to whichever field name the attacker put in the form body, which panics whenever the destination field\u0027s real type is incompatible (slice, different struct, primitive). Gin recovery converts each panic into HTTP 500, but the endpoint remains remotely panicable from a single unauthenticated form-encoded request and is repeatedly triggerable. This vulnerability is fixed in 4.2.2."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20: Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-755",
"description": "CWE-755: Improper Handling of Exceptional Conditions",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-843",
"description": "CWE-843: Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T15:43:34.136Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48"
},
{
"name": "https://github.com/free5gc/free5gc/issues/918",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/free5gc/free5gc/issues/918"
},
{
"name": "https://github.com/free5gc/nrf/pull/83",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/free5gc/nrf/pull/83"
},
{
"name": "https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423"
}
],
"source": {
"advisory": "GHSA-f8qv-7x5w-qr48",
"discovery": "UNKNOWN"
},
"title": "free5GC: NRF POST /oauth2/token structured-form parser type-confusion panic family (Reflect.Set on incompatible types)"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-44325",
"datePublished": "2026-05-27T15:43:34.136Z",
"dateReserved": "2026-05-05T19:00:06.023Z",
"dateUpdated": "2026-05-27T17:50:51.669Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-44325\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-27T17:50:19.740036Z\"}}}], \"references\": [{\"url\": \"https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-27T17:49:58.523Z\"}}], \"cna\": {\"title\": \"free5GC: NRF POST /oauth2/token structured-form parser type-confusion panic family (Reflect.Set on incompatible types)\", \"source\": {\"advisory\": \"GHSA-f8qv-7x5w-qr48\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"free5gc\", \"product\": \"free5gc\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 4.2.2\"}]}], \"references\": [{\"url\": \"https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48\", \"name\": \"https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/free5gc/free5gc/issues/918\", \"name\": \"https://github.com/free5gc/free5gc/issues/918\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/free5gc/nrf/pull/83\", \"name\": \"https://github.com/free5gc/nrf/pull/83\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423\", \"name\": \"https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC\u0027s NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/api_accesstoken.go reflects over models.NrfAccessTokenAccessTokenReq, special-cases only plain string and NrfNfManagementNfType fields, and treats every other field as if it were a single models.PlmnId. The parsed *models.PlmnId is then assigned with reflect.Value.Set() to whichever field name the attacker put in the form body, which panics whenever the destination field\u0027s real type is incompatible (slice, different struct, primitive). Gin recovery converts each panic into HTTP 500, but the endpoint remains remotely panicable from a single unauthenticated form-encoded request and is repeatedly triggerable. This vulnerability is fixed in 4.2.2.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-20\", \"description\": \"CWE-20: Improper Input Validation\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-755\", \"description\": \"CWE-755: Improper Handling of Exceptional Conditions\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-843\", \"description\": \"CWE-843: Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-05-27T15:43:34.136Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-44325\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-27T17:50:51.669Z\", \"dateReserved\": \"2026-05-05T19:00:06.023Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-05-27T15:43:34.136Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…